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April 20, 2014

Search: electrical ? resistor

Number of results: 1,708

physics
A resistor with 780 is connected to the plates of a charged capacitor with capacitance 4.32 . Just before the connection is made, the charge on the capacitor is 7.80 1)What is the energy initially stored in the capacitor? 2)What is the electrical power dissipated in the ...
Monday, April 22, 2013 at 9:06am by samya

Phys
The value of a real-world resistor ______ changes with significant time as the resistor conducts a current. never rarely sometimes usually I think either never or rarely, but I'm not sure. When you unplug the resistor, the Ammeter and Voltmeter reading goes down to 0 because ...
Wednesday, February 9, 2011 at 2:52pm by Jennifer

PHYSICS
The value of a real-world resistor ______ changes with significant time as the resistor conducts a current. never rarely sometimes usually I think either never or rarely, but I'm not sure. When you unplug the resistor, the Ammeter and Voltmeter reading goes down to 0 because ...
Wednesday, February 9, 2011 at 8:50pm by Jennifer

electrical ? resistor
Calculate R of a thin-film gold resistor:L = 1 mm, width = 0.2 mm, and thickness = 0.01 mm. I am not sure what formula to use for this?
Monday, July 26, 2010 at 4:06pm by sam

Pre-Calc
Hello, I am not sure how to go about solving this equation: The total electrical resistance R of two resistors connected in parallel with resistances R1 and R2 is given by 1/R=1/R1+1/R2. One resistor has a resistance of 2.3 ohms. Let x be the resistance of the second resistor...
Sunday, December 6, 2009 at 9:49pm by Jon

physics
An oven is plugged into a 120 V electrical outlet and "cooks" the food by using a 144 ohm resistor light bulb that converts electrical energy to both light and heat energy. If the light bulb converts 75% of the electrical energy to thermal energy, and the oven is used for a ...
Thursday, May 30, 2013 at 8:49am by maddy

PreCalc
The total electrical resistance R of two resistors connected in parallel with resistances R1 and R2 is given by 1/R=1/R1+1/R2. One resistor has a resistance of 2.3 ohms. Let x be the resistance of the second resistor. Express the total resistance R as a function of x. How do I...
Wednesday, December 1, 2010 at 9:15pm by Linda

Physics
A commercial resistor can safely dissipate power only up to a certain rated value. Beyond this value, the resistor becomes excessively hot and often cracks apart. The resistor used in this experiment was rated by the manufacturer to be a 2 watt resistor. What is the largest ...
Tuesday, February 23, 2010 at 1:02pm by San

math
90 volts are applied to a circut with 3 resistors resistor 1=20 ohms resistor 2=40 ohms and resistor 3=60 ohms how much power will be dissipated by resistor 1
Wednesday, September 19, 2012 at 6:22pm by chad

Physics
A filament bulb and a resistor are connected in series to a battery. Which of the following will contribute to the load of the circuit? A. Bulb B. resistor C. Bulb and resistor D. none I'm thinking the resistor, but I'm unsure. Thanks
Wednesday, January 23, 2013 at 8:24pm by Need some help

Physics
A filament bulb and a resistor are connected in series to a battery. Which of the following will contribute to the load of the circuit? A. Bulb B. resistor C. Bulb and resistor D. none I'm thinking the resistor, but I'm unsure. Thanks
Thursday, January 24, 2013 at 1:57pm by Need some help

Physics (Tricky)
If the length of a conductor is doubled, the resistance will be ___ the original resistance. A. less than - i think its A? B. equal to C. half D. twice A resistor most suited to dissipating high power levels would be: A. Thick film resistor - i think it's A? B. Wire wound ...
Monday, June 10, 2013 at 10:34am by John

electrical ? resistor
Use the resisitivity relation. Look up the resistivity of gold.
Monday, July 26, 2010 at 4:06pm by bobpursley

College Physics
A simple circuit is made of a power source, a rheostat and an ohmic resistor. The potential difference across the resistor is initially 5.0 0.1 V. A good lab student measures the current across the resistor to be 1.65 5 mA. a)If the student increases the voltage across the...
Tuesday, February 10, 2009 at 2:26pm by Jas

physics
A 6.0 resistor and a 3.0 resistor are connected in parallel to a 1.5 V battery of negligible internal resistance. What is the current in the 3.0 resistor?
Thursday, March 6, 2014 at 9:22pm by Lucy

Physics
Could someone please help me with these questions. . . 1. Why are there positive and negative electrical charges, while magnetic poles always seem to be bound together? 2.If two resistors are connected in parallel, how do you know that their effective resistance will always be...
Monday, December 3, 2007 at 12:32pm by Adam

physics
A 65.0- resistor is connected in parallel with a 117.0- resistor. This parallel group is connected in series with a 22.0- resistor. The total combination is connected across a 15.0-V battery Find the current in the 117.0- resistor. Find the power dissipated in the 117.0- ...
Saturday, January 29, 2011 at 5:39pm by Anonymous

physics
please i need help solving this problem, what is the resistance of a resistor if the potential difference across the resistor is 4.0 V when a current of 10.0 A flows through the resistor?
Tuesday, December 1, 2009 at 11:37am by Paulo

physics
A resistor is connected across the terminals of a 6.00-V battery, which delivers 3.50 105 J of energy to the resistor in 11 hours. What is the resistance of the resistor?
Wednesday, January 19, 2011 at 1:00pm by Anonymous

physics
The Easy Bake Oven is a common toy for young children who want to emulate the process of cooking. Suppose this oven is plugged into a 120 V electrical outlet and "cooks" the food by using a 144 ohm resistor light bulb that converts electrical energy to both light and heat ...
Thursday, May 30, 2013 at 11:05pm by Julia

science
laboratory connects a 16 resistor, 23 resistor, and a 34 resistor in series and then comes the arrangement to a 36V dc source. How much current is in the circuit?
Saturday, December 17, 2011 at 8:23am by alex

Electrical Engineering
what is one time constant of a 47 micro farad capacitor in series with a 120 kilo ohm resistor?
Saturday, April 3, 2010 at 10:42pm by Jay

Physics
A simple circuit is made of a power source, a rheostat and an ohmic resistor. The potential difference across the resistor is initially 5.0 +/- 0.1 V. A good lab student measures the current across the resistor to be 1.65 +/- 5 mA. a)If the student increases the voltage across...
Tuesday, February 10, 2009 at 1:08am by Nina

Phyics please help ms sue
thank you for answering my question. i need to find out why it is only outputing 100mA current only 100 W resistor is open. 100 W resistor is shorted. 35 W resistor is shorted. 55 W resistor is shorted.
Friday, May 31, 2013 at 1:21pm by Adam

science
A thermally insulated 50 ohm resistor carries a current of 1 A for 1 s. The initial temperature of the resistor is 10 degree Celsius, its mass is 5 g, its specific heat capacity is 850. What is the change in entropy of the resistor?
Wednesday, February 1, 2012 at 12:10am by prabhu

Physics
a 9v battery is in series with a 10 ohm resistor, a 20 ohm resistor, and a 30 ohm resistor. What is the power absorbed by the 10 ohm resistor?
Sunday, February 13, 2011 at 9:23pm by Bobby

Someone please help me with science?
1. Which of the following shows the correct sequence of energy transformations when listening to the radio? electrical; kinetic; sound; kinetic; electrical electrical; sound; kinetic; sound; electrical sound; electrical; kinetic; electrical; sound kinetic; sound; electrical; ...
Tuesday, April 16, 2013 at 10:52pm by Rebekah

7TH GRADE SCIENCE?!?!
1. Which of the following shows the correct sequence of energy transformations when listening to the radio? electrical; kinetic; sound; kinetic; electrical electrical; sound; kinetic; sound; electrical sound; electrical; kinetic; electrical; sound kinetic; sound; electrical; ...
Tuesday, April 16, 2013 at 11:41pm by Rebekah

Physics
1)If a resistor is added to a parallel circuit, the equivalent resistance: A)increases B)decreases C)remains the same D)becomes zero I got B 2)A 10.0 resistor, 20.0 resistor, and 25.0 resistor are connected in series across a 110-V supply. Calculate the current in the circuit...
Wednesday, April 9, 2008 at 1:41pm by Jon

chemistry
something connects a 16 resistor, 23 resistor, and 34 resistor in series and then connects the arrangement to a 36 v dc source. how much current is in the circuit?
Saturday, December 3, 2011 at 10:35pm by Tammy

physics
a 1 ohm resistor, a 1000 resistor and a 2000 ohm resistor are connected in parallel. The total resistance is
Sunday, May 15, 2011 at 11:34am by Susmitha

physic
a resistor has a voltage of 6.65 V and a current of 4.45 A. it is placed in a calorimeter containing 200g of water at 24 degree Celsius. the calorimeter is aluminum (specific heat= 0.220 cal/g-Celsius), and its mass is 60g. the heat capacity of the resistor itself is ...
Tuesday, February 26, 2013 at 2:18pm by julie

Algebra
Show all steps The maximum number of volts, E, that can be placed across a resistor is given by the formula E=sq root(PR), where P is the number of watts of piwer that the resistor can absorb and R is the resistance of the resistor in ohms. Solve this equation for R. Use the ...
Tuesday, October 25, 2011 at 7:50pm by Betty

Physics
Could some one tell m if this is right? 1)Does currend flow through a resistor or across a resistor in a series circuit? THROUGH 2) Is a voltage establishes through a resistor or across ? ACROSS PARALLEL CIRCUITS 1)there is a voltage drop of 6volts across each 2- resistor the...
Wednesday, March 25, 2009 at 7:55pm by joshua

physics
A 15.0 resistor and a 20.0 resistor are connected in parallel. A 5.00 resistor is connected across a 1.00 10^2-V battery. What is the current flowing through the 20.0 resistor? A. 1.21 A B. 3.15 A C. 5.00 A D. 6.84 A I don't think it's C....
Tuesday, April 7, 2009 at 6:36pm by sophie

physics
A 59.0-Ω resistor is connected in parallel with a 116.0-Ω resistor. This parallel group is connected in series with a 15.0-Ω resistor. The total combination is connected across a 15.0-V battery. (a) Find the current in the 116.0-Ω resistor. _______ A (b) ...
Wednesday, January 26, 2011 at 11:34pm by ali-1

physics
A 59.0-Ω resistor is connected in parallel with a 116.0-Ω resistor. This parallel group is connected in series with a 15.0-Ω resistor. The total combination is connected across a 15.0-V battery. (a) Find the current in the 116.0-Ω resistor. ______A (b) Find...
Tuesday, February 1, 2011 at 6:29pm by ashley

Physics
The nominal resistance R of the resistor used in this experiment was printed on the resistor by the manufacturer. According to the manufacturer, the actual resistance of the resistor should not differ from its nominal value by more than 1%. Does your most accurate measured ...
Tuesday, February 23, 2010 at 1:04pm by Joseph

Physics
A 5.0 Ω resistor, a 9.0 Ω resistor, and a 10.0 Ω resistor are connected in parallel across a 24.0 V battery. What is the equivalent resistance of the circuit? Answer in units of Ω
Tuesday, February 19, 2013 at 9:54pm by Kai

physics
The current in a 51 resistor is 0.14 A. This resistor is in series with a 28 resistor, and the series combination is connected across a battery. What is the battery voltage?
Wednesday, February 2, 2011 at 1:02pm by ali-

Physics.
A 15.0- resistor and a 20.0- resistor are connected in parallel. A 5.00- resistor is connected in series with this parallel arrangement. The resistors are connected across a 1.00 10^2-V battery. What is the current flowing through the 20.0- resistor? IS it 3.15 A?
Wednesday, May 20, 2009 at 12:40pm by Amber.

Physics
Three resistors having the same resistance value are wired in parallel. How does the equivalent resistance compare to the resistance value of a single resistor? The equivalent resistance is thrice the value of a single resistor. The equivalent resistance is the same as the ...
Monday, October 22, 2012 at 4:16pm by BoBo

physics 102
The output voltage of an AC generator is given by Δv = (180 V) sin (70πt). The generator is connected across a 13.0-Ω resistor. (a) By inspection, what is the maximum voltage? V (b) By inspection, what is the frequency? Hz (c) Find the rms voltage across the ...
Thursday, August 9, 2012 at 5:53pm by Matt Will

Science
A thermally insulated 50ohm resistor carries a current of 1A for 1s. The initial temperature of the resistor is 10degree, its mass is 5g, and its specific heat capacity is 850j/kg/k. Calculate the change in entropy of the resistor and what is the change in entropy of the ...
Sunday, March 24, 2013 at 11:32pm by Salando

Science
A thermally insulated 50ohm resistor carries a current of 1A for 1s. The initial temperature of the resistor is 10degree, its mass is 5g, and its specific heat capacity is 850j/kg/k. Calculate the change in entropy of the resistor and what is the change in entropy of the ...
Sunday, March 24, 2013 at 11:32pm by Salando

Science
A thermally insulated 50ohm resistor carries a current of 1A for 1s. The initial temperature of the resistor is 10degree, its mass is 5g, and its specific heat capacity is 850j/kg/k. Calculate the change in entropy of the resistor and what is the change in entropy of the ...
Sunday, March 24, 2013 at 11:33pm by Salando

Math!!
Christmas lights that stay on when one bulb burns out are wired as parallel circuits. Resistors can be used with parallel electrical circuits to restrict the current flow and produce heat. If the first resistor (R1) = 20 Ohms, the second resistor (R2) = 30 Ohms and the ...
Sunday, March 3, 2013 at 9:54pm by Urgent math help!!

mathematica
Christmas lights that stay on when one bulb burns out are wired as parallel circuits. Resistors can be used with parallel electrical circuits to restrict the current flow and produce heat. If the first resistor (R1) = 20 Ohms, the second resistor (R2) = 30 Ohms and the ...
Sunday, March 3, 2013 at 10:23pm by Please Urgent Urgent! math help!!

physics
Your electronic friend needs a 20 ohms resistor but has only 40 ohms resistor. He tells you that he can combine them to produce a 20 ohms resistor? How?
Wednesday, September 8, 2010 at 1:45pm by Christy

Electrical
(2) 1500 resistors are connected in series. They are then connected in parallel to a single (1) 5 k resistor. a) Draw the circuit before and after reduction: b) What is the equivalent resistance of the circuit?
Saturday, March 12, 2011 at 9:44am by Chris Williams

Physics 2
A(n) 78- resistor and a 68- resistor are connected in series across a battery. The voltage across the 78- resistor is 25 V. What is the voltage across the 68- resistor?
Thursday, February 16, 2012 at 12:10pm by Anne

physics
The potential differnece across a resistor is 4.4 * 10^2 V. If the resistance of the resistor is 1.8 k ohms, how much current flows throught the resistor? R=1.8 k ohms I=? 4.4*10^2 V V=IR I=V/R = 4.4 * 10^2 ___________ = 2.44*10 1.8 * 10^ 24.4 A is this done correctly?
Sunday, March 15, 2009 at 4:35pm by physics

College Physics
You have 20 and 80 (unit is the upside down U) resistors in a circuit with a 100 V battery. A)These resistors are parallel. Find the current through each resistor and the voltage drop across each resistor. B) These resistors are connected in series. Find the current through ...
Sunday, February 7, 2010 at 12:18am by Kate

Physics repost
A 2.00 resistor, and a 12.0 resistor are connected in parallel across a 20.0-V battery. What is the current flowing through the 2.00 resistor? A)1.67 A B)1.40 A C)11.6 A D)10.0 A This is all I understand. Can you explain step by step and show how to get the answer? To find ...
Wednesday, April 9, 2008 at 7:42pm by Jon

Math!! Algebra!!
Christmas lights that stay on when one bulb burns out are wired as parallel circuits. Resistors can be used with parallel electrical circuits to restrict the current flow and produce heat. If the first resistor (R1) = 20 Ohms, the second resistor (R2) = 30 Ohms and the ...
Sunday, March 3, 2013 at 9:54pm by Please Urgent math help!!

physics
A resistor of resistance R is connected to a power supply of constant EMF E=12 V and internal resistance r=3 Ω . The energy dissipated in the resistor R is used to heat water. What resistance R in Ohms gives the maximum power dissipated in the resistor?
Monday, May 13, 2013 at 1:30pm by intermediate player PLEASE HELP

Physics
A 10-ohm resistor is attached to a 20-ohm resistor in series. This combination is then attached to a 30-ohm resistor in parallel. This is then connected to a 120-V battery. What is the current drawn from the battery?
Thursday, March 20, 2014 at 1:05pm by Bano

Physics
12 volts is applied across a 4 ohm resistor. How much power is dissipated by the resistor?
Thursday, November 29, 2012 at 10:54am by Hans

PHYSICS
The average power dissipated in a 47- resistor is 5.9 W. What is the peak value I0 of the ac current in the resistor?
Friday, March 4, 2011 at 10:53pm by YANA

Physics
An rms voltage of 120 V produces a maximum current of 2.6 A in a certain resistor.Find the resistance of this resistor?
Sunday, July 24, 2011 at 7:05pm by Ryan

Physics
A current of 4.6 A is measured through a 7.8 ohms resistor for 1.75 minutes. How much heat is generated by the resistor?
Tuesday, February 26, 2013 at 5:39pm by Brittany

Physics
A current of 4.6 A is measured through a 7.8 ohms resistor for 1.75 minutes. How much heat is generated by the resistor?
Tuesday, February 26, 2013 at 5:41pm by Brittany

College Physics
First, what is the equivalent resistance in the circuit: R= 9.1/2+5.9/2=4.55+2.99=7.54 ohms What is the circuit current? 20/7.54 what is the current in each resistor (half the circuit current)= 10/7.54 Now figure voltage across each resistor. V=I*resistanceof resistor
Friday, February 12, 2010 at 9:49pm by bobpursley

Physics-College
You have a 50V battery in a circuit with a single resistor R. If the resistor dissipates 200 J of energy in 5 seconds, what is its resistance?
Thursday, February 4, 2010 at 5:02pm by Katie

physics
You say each circuit has one resistor. (a) The power in that resistor is P = V^2/R (b) The current in the resistor is I = V/R V is either 10 or 20 volts, depending upon the circuit. R is either 8 or 16 , depending upon the circuit.
Thursday, February 14, 2013 at 6:02am by drwls

Physics
The value of a real-world resistor ______ changes with significant time as the resistor conducts a current. never rarely sometimes usually
Wednesday, February 9, 2011 at 12:26pm by Jennifer

Physics
Use Kirchhoff's junction theorem to explain why the total equivalent resistance of a circuit is reduced, not increased, by connecting a second resistor in parallel to another resistor.
Sunday, June 5, 2011 at 9:30pm by John

Physics
Resistors in series add. Equivalent resistance is 37 + 59 = 96 ohms. Use ohm's law to get the current that goes through through both resistors. The first resistor gets 37/96 of the 43 V applied voltage. The second resistor gets the rest. resistor power dissipation = I^2 R
Thursday, April 28, 2011 at 1:28am by drwls

Physics
Explain what happens to the charge carriers in a semiconductor light dependant resistor when it is illuminated. Suggest why shining light onto an LED might be expected to generate a small voltage between its terminals. Thx A semiconducting light-dependent resistor excites more...
Saturday, February 17, 2007 at 9:36am by Ishani

Physics
I need help. Resistor 1: Watts=? Current=? Resistance=520 Volts=? Resistor 2: Watts=? Current=? Resistance=? Volts=57.5 Resistor 3: Watts=? Current=? Resistance=1200 Volts=? Total: Watts=? Current=? Resistance=? Volts=280 Find Resistor 2's resistance. Please help and Thank you
Saturday, September 21, 2013 at 7:28pm by Anonymous

physics
Each of the four circuits in the drawing consists of a single resistor whose resistance is either R or 2R, and a single battery whose voltage is either V or 2V. The unit of voltage in each circuit is V = 10 V and the unit of resistance is R = 8 Ω. Determine (a) the power ...
Thursday, February 14, 2013 at 6:02am by Anonymous

electrical
6.A resistor R1 dissipates power P when connected to a certain generator with voltage V. If a resistance R2 is put in series with R1 the power dissipation by R1 A) Decreases B) Increases C) Remains the same D) Any of the above depending upon the value of R1 and R2
Thursday, March 1, 2012 at 3:31am by Anonymous

PhysicsPLEASE HELP
i have a lab where we used VI method to calculate resistance of a LARGE resistor... circuit is as follows..(--- indicates wire) source---ammeter---resistor(voltmeter connected in parralel to resistor)---(connected back to source) the R value calculated was wrong. i need to ...
Tuesday, February 9, 2010 at 12:07am by SAM

physics.
resistors of 30 ohms and 60 ohms are connected in parallel and joined in series to a 10 ohm resistor. the circuit voltage is 180 volts I need to find 1)the voltage of the parallel circuit 2)the resistance of the complete circuit 3)the voltage across the 10 ohm resistor 4) the ...
Wednesday, May 18, 2011 at 7:44pm by Nilan - please help

Phyics please help ms sue
An open resistor is a resistor with one of the leads not connected.An open resistor can have no current or voltage, and it can have no effect on any circuit. => 35 Ω and 55 Ω are shorted and 100 Ω is open => ℰ=IR =10010⁻³ 90 = 9 V.
Friday, May 31, 2013 at 1:21pm by Elena

physics
An 21.0 , 12.0 , and 5.0 resistor are connected in series with an emf source. The current in the 12.0 resistor is measured to be 4.00 A.
Thursday, May 10, 2012 at 10:22pm by dan

physics
A current of 1ampere is supplied to two resistor of resistances 2ohm's and 3ohm's connected in parallel.calculate the current in each resistor.
Tuesday, December 1, 2009 at 11:37am by wale

physics
A 75.0-W lamp is placed in series with a resistor and a 120.0-V source. If the voltage across the lamp is 24 V, what is the resistance R of the resistor?
Tuesday, October 11, 2011 at 1:54pm by ashley

circuits
when a parallel 5k ohm resistor and a 25k ohm resistor have a 10v supply, what is the total power loss?
Tuesday, March 19, 2013 at 10:37pm by Anonymous

physics
A 350-ohm resistor is connected in series with a 270-ohm resistor. What is their equivalent resistance in ohms?
Wednesday, November 2, 2011 at 11:21am by elisabeth

Physics
A 10 ohm resistor and a 20 ohm resistor are connected in parallel. What is the equivalent resistance of this setup?
Tuesday, December 4, 2012 at 5:13am by Anonymous

physics
A 250-ohm resistor is connected in parallel with a 190-ohm resistor. What is their equivalent resistance?
Wednesday, November 2, 2011 at 10:07am by elisabeth

Physics
1)Several resistors are connected in series. If a battery provides constant voltage in this circuit the addition of another resistor in series a)increases current through each resistor b)decreases current through each resistor c)doesn't affect the current throught any resistor...
Friday, April 4, 2008 at 4:27pm by Andrea

Physics
1)A 15.0 resistor and a 20.0 resistor are connector in parallel. A 5.00 resistor is connected in series with this parallel arrangement. The resistors are connected across a 1.00(I think something else is suppose to be after that but its missing)10^2-V battery. What is the ...
Wednesday, April 9, 2008 at 2:24pm by Jon

physics
a 2 uF capacitor is connected in series with a 1.2 M ohms resistor and a 5 v battery for a long time. What is the current in the resistor 1s after disconnecting the battery?
Wednesday, November 23, 2011 at 7:20pm by JM

series and parellel circuits
ok here we go ... its a series-parellel circuit with 5 resistors. 12 volt battery- wire goes up then one wire branches up at 45 deg with a 10 ohm resistor then down at a 45 deg with a 10 ohm resistor, a second wire branches down at 45 deg with a 20 ohm resistor then up at a 45...
Monday, May 21, 2012 at 11:47am by Dave

College Physics
I need help with this question, A 4-ohm resistor is connected in parallel with a 6 ohm resistor. What is the total resistance of this pair of resistors? I know the answer is 2.4 ohms, but I don't know how to get it. Please help!!
Saturday, April 4, 2009 at 12:53pm by Michael

Physics
1)Several resistors are connected in parallel. If a battery provides constant voltage in this circuit the addition of another resistor in parallel a)increases current through each resistor b)decreases current through each resistor c)doesn't affect the current through any ...
Saturday, April 5, 2008 at 8:16pm by Andrea

College Physics
A single resistor is wired to a battery. Define the total power dissipated by this circuit as P(initial). What is the Power? Now, a second identical resistor is wired in series with the first resistor. What is the power, in terms of P(initial), dissipated by this circuit? The ...
Monday, February 8, 2010 at 12:15am by Lanise

Science
How does an electrical current in a circuit produce thermal, sound, and magnetic energy? The electrical current flows thru devices that convert the electrical energy to mechanical or electomagnetic waves. i have a science project do tommorrow but i need some pictures of the ...
Thursday, March 29, 2007 at 7:58pm by SasukeUchihaFanatic

physics
A DC circuit has a single battery of voltage V = 10.0 V attached to a resistor R = 100 Ohms. If the voltage is increased to 20.0 V, then by what factor does the power emitted by the resistor increase?
Wednesday, March 5, 2014 at 12:33am by tyler

Physics
A capacitor of capacitance C= 10mF, is charged using a battery of potential V, through a resistor of resistance R = 250 ohms. the charge of the capacitor is given by Q(t)=CV[1− e ^ (−t/RC)] Find an expression for the current passing through the resistor as a ...
Sunday, March 21, 2010 at 10:34pm by drwales

BASIC ELEC
NAME THE 5 REQUREMENTS NECESSARY TO HAVE A SAFETY OPERATING ELECTRICAL CIRCUIT 1. CONDUCTOR 2. RESISTOR 3. SWITICH 4. CIRCUIT BREAKER IS THAT CORRECT? NAME 4 CONDUCTORS OF ELECTRICITY 1. COOPER 2. ALUMINIUM 3. BRASS 4. IRON IS THAT CORRECT ? WHAT ARE THE 4 FACTORS AFFECTING ...
Tuesday, January 10, 2012 at 6:11pm by LISA

electrical
The minimum size of a electrical cable recomended for use in power circuit is.
Sunday, November 1, 2009 at 10:45am by john

Science
no, copper is a high electrical conductor. and electrical measure is in units of volts.
Thursday, June 3, 2010 at 9:11pm by tutor

electrical technology
explain the importance of the telephone hammer in electrical installation
Thursday, February 11, 2010 at 9:02pm by shaquille

physics
a 40.0 ohm resistor and a 90.0 ohm resistor are connected in parallel, and the combination is connected across a 120 V dc line. A)what is the resistance of the parallel combination. B)what is the total current through the parallel combination. C)what is the current through ...
Tuesday, May 11, 2010 at 1:06pm by brad

physic
a 40.0 ohm resistor and a 90.0 ohm resistor are connected in parallel, and the combination is connected across a 120 V dc line. A)what is the resistance of the parallel combination. B)what is the total current through the parallel combination. C)what is the current through ...
Monday, August 2, 2010 at 7:15pm by paul

Calculus
By Kirchoffs voltage law the sum of the voltage in the circuit. Consider the circuit with variable resistor R. 5V 10ohms R A. find a relationship between I and R in the circuit using E=I R and kirchoffs voltage law. B. the power to a resistor is given by I^2R watts write P as ...
Wednesday, September 26, 2012 at 5:51pm by kieran

physics
please tell me if thsi si correct Two equal charges are seperated by 3.7 * 10^-10 m. the force between the charges has a magnitude of 2.37 * 10^-3 N. What is the magnitude of q on the changes? f=1/4pi Er * q^2/r^2 2.37 * 10^-3 = 9*10^9 * q^2 ______________ (3.7 * 10^-10)^2 3....
Tuesday, March 17, 2009 at 6:32pm by physics

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