electricity

Most popular questions
  1. Electricity

    can someone please help me on unbalanced Wheatstone bridge. I tried search this on google and i didn't understand it. i understand the balanced Wheatstone bridge but not the unbalanced.

    asked by anonymous on March 26, 2019
  2. electricity

    What bias conditions must be present for the normal operation of a transistor amplifier? A)the emitter base junction must be reverse biased, and the collector base junction must be forward biased. B)the emitter base junction must be forward biased, and the

    asked by angela on August 24, 2005
  3. electricity

    to use your left hand to determine the direction of the voltage developed in a moving conductor in a stationary magnetic field, you must point your? A) thumb in the direction of the magnetic flux. B)thumb in the direction of the electromagnetic force.

    asked by angela on August 23, 2005
  4. Electricity

    For the circuit in series: E=100v Resistor 1 = 3 kΩ Resistor 2 = 4 kΩ Resistor 3 = 1 kΩ, p= 200mW Resistor 4 = R find the following quantities: a. The circuit currents b. The total resistance of the circuit c. The value of the unknown resistance, 6. d.

    asked by anonymous on March 4, 2019
  5. Electricity

    50.0pJ of energy is stored in a 3.00cm × 3.00cm × 3.00cm region of uniform electric field. What is the strength of the field?

    asked by Anonymous on May 9, 2014
  6. electricity

    The grid in a high-vacuum triode is usually kept negatively charged with respect to the cathode so that the electrons may be? A)accelerated toward the anode. B)accelerated toward the cathode. C)attracted to the anode instead of the grid. D)attracted to the

    asked by angela on August 24, 2005
  7. Electricity

    1) consider two charges q1 =3 uc and q2=-2 uc, a) state whether the electric force between these charges is attractive ore repulsive b) what happens to the electric force if the distance between the charges is double (multiplied by two). 2) if the current

    asked by anonymous on April 13, 2019
  8. electricity

    Compute the electrical force between the following charges and state whether it is attractive or repulsive. Q1 = 3 microcoulombs and Q2 = -2 microcoulombs, separated by 12cm. use the following formula. k = 9x10^9 N*m^2/c^2. The formula is F = k*(Q1*Q2)/R^2

    asked by Anonymous on February 4, 2019
  9. electricity

    if 500 microcoulombs of charge pass within 5 ms through the circuit shown, what is the current?

    asked by Anonymous on February 4, 2019
  10. Electricity

    find the voltage across each resistor in series. E=15v There are three resistors: R, 2R, 4R Note: R is the lowest value and all others are multiples of that value as indicated. Note to anyone who is doing this question: there was NO picture given

    asked by anonymous on March 5, 2019
  11. Electricity

    if the current through resistor is 5 mA. how many coulmobs of charge flow through this resistor in one minute?

    asked by anonymous on April 13, 2019
  12. electricity

    if a bar of copper is brought near a magnet, the copper bar will be? A)attracted by the magnet. B)unaffected by the magnet. C)repelled by the magnet. D)made into an induced magnet. B)unaffected by the magnet. Actually there is a very slight repulsn due to

    asked by angela on August 24, 2005
  13. Electricity

    Find the voltage across each resistor in a series circuit. Note: R is the lowest value and all others are multiples of that value as indicated. (there is no diagram for this circuit) double battery cell = 15v resistor1 = R resistor2 = 2R resistor3 = 4R

    asked by anonymous on April 15, 2019
  14. Electricity

    in the circuit below find the volts at V4 4 is grounded R1 is 15 volts R2 is 12 volts R3 is 10 volts www.ibiblio.org/kuphaldt/electricCircuits/DC/00082.png my answer is 15v+12v+10v =37v if V1=37v, then v2=37v-15v = 22v, then v3=37v-15v-12v = 10v then v4=

    asked by anonymous on April 14, 2019
  15. Electricity

    This is a multiple choice question. The current in a given is not to exceed 19 A. which value of fuse is best? a) 22 A b)a fuse is not necessary c)21 A d)25 A

    asked by anonymous on April 13, 2019
  16. Electricity

    1. How much will it cost to run a 1500-watt swimming pool heater continuously for 5 hours if the utility company is charging 10 cent per kWh?

    asked by anonymous on March 4, 2019
  17. Electricity

    for the circuit of figure, find the following quantities. i can't show you the figure because i can't copy it from a PDF. i will just type it to show you the figure for you guys. A single cell battery (which is 130 v) is connected to: R1: 3k ohm R2: 4k ohm

    asked by anonymous on March 4, 2019
  18. Electricity

    2) Determine the resistance at 20 degrees Celsius, of 25m of solid aluminum round wire having a radius of 2mm. (Recall the relationship R=pl/A. The resistivity for Aluminum at 20 degrees Celsius = 2.8 x 10-8 Ωm).

    asked by anonymous on March 4, 2019
  19. Electricity

    1) How much will it cost to run a 1500-watt swimming pool heater continuously for 5 hours if the utility company is charging 10 cent per kWh? 2) Determine the resistance at 20 0c, of 25m of solid aluminum round wire having a radius of 2mm. (Recall the

    asked by anonymous on March 4, 2019
  20. Electricity

    In a series circuit, there are 4 resistor with one battery cell. (there's no diagram for this question) The battery cell = 100v r1 = 3kΩ r2 = 4kΩ r3 = 1kΩ, P=100mW r4 = ? find the following quantities: 1) the circuit currents 2)the total resistance of

    asked by anonymous on April 14, 2019
  21. Electricity

    4. Which one of the following equations for power is incorrect? a. P=IR b. P=W/t c. P=IV d. P=V^2 /R

    asked by anonymous on March 4, 2019
  22. Electricity

    2. According to Coulomb’s Law, what is the change of force between two electrically charged bodies when the distance between them is increased by 3 times? a. Decrease 9 times b. Increase 3 times c. Decrease 3 times d. Increase 9 times

    asked by anonymous on March 4, 2019
  23. electricity

    the function of a capacitor in an electric circuit is to? A)allow current flow between its plates. B)measure the amount of current in the circuit. C)increase circuit power. D) store electric charges. A and D are both correct, if you include in "current

    asked by angela on August 23, 2005
  24. Electricity

    if an electrically uncharged body is contacted by an electrically charged body,the uncharged body will? A)develop the opposite charge as the charged body. B)remain na neutrally charged body. C)develop the same charge as the charged body. D)neutralize the

    asked by angela on August 22, 2005
  25. Electricity

    when an electric current flows through a long conductor, each free electron moves? A)from one end of the conductor to the other end. B)with a speed of 300,000,000 m/s. C)back and forth between the ends of the conductor. D)through a relatively short

    asked by angela on August 20, 2005
  26. electricity

    A current loop with radius 20 cm and current 2 A is in a uniform magnetic field of 0.5 T. Considering all possible orientations of the loop relative to the field, what is the largest potential energy difference (in Joules) you can find between two

    asked by Antony need some help here on November 23, 2013
  27. Electricity

    if an electrically uncharged body is contacted by an electrically charged body,the uncharged body will? A)develop the opposite charge as the charged body. B)remain na neutrally charged body. C)develop the same charge as the charged body. D)neutralize the

    asked by angela on August 20, 2005
  28. Electricity

    when an electron is displaced in a semiconductor, the hole that's left behind is? A)attracted to the negative terminal of the voltage source. B)incapable of carrying a charge. C)attracted to the anode of the voltage source. D)considered an impurity in the

    asked by angela on August 20, 2005
  29. Electricity

    Find the voltage across each resistor in a series circuit. Note: R is the lowest value and all others are multiples of that value as indicated. (there is no diagram for this circuit) double battery cell = 15v resistor1 = R resistor2 = 2R resistor3 = 4R my

    asked by anonymous on April 15, 2019
  30. electricity

    A series RL circuit contains two resistors.The resistors are 60ohm and 30ohm.when calculating the circuit values, what is the total resistance?

    asked by Jake on April 20, 2016
  31. Electricity

    A 10 nF capacitor is charged to 5 V. How much charge does it store?

    asked by Raisa on March 27, 2014
  32. electricity

    including a full wave rectifier in an AC circuit will yield a ----- current. A)intermittent direct. B)intermittent alternating. C)continuous direct. D)continuous alternating. Full wave rectifier will reverse the negative waves, making the output voltage

    asked by angela on August 23, 2005
  33. electricity

    Two long, parallel wires carry current in the x-y plane. One wire carries 30 A to the left along the x-axis. The other carries 50 A to the right along a parallel line at y = 0.28 m. At what y-axis position in meters is the magnetic field equal to zero?

    asked by Collin on November 30, 2013
  34. electricity

    Is it cheaper to use the dishwasher or wash them by hand? I think dishwasher but I need some kind of proof. Ive read serveral times that im right but can someone confirm?

    asked by House on October 3, 2008
  35. Electricity

    A motor running at its rated power provides 2.6 lb-ft torque at its rated speed of 2020 rpm. The motor draws 5.6-A from a 230-V supply at a phase angle of 37 degrees. Determine the following: The horsepower delivered by the motor, The efficiency of the

    asked by Nick on January 24, 2008
  36. electricity

    the magnitude of the voltage induced in a conductor moving through a stationary magnetic field depends on the ------- and the------- of the conductor. A)lenght, speed. B)distance, circumference. C)resistance, current. D)color, capacitance. length and

    asked by angela on August 23, 2005
  37. electricity

    how many volts does a nickel cadmium produce? VOLTAGE FOR ONE CELL

    asked by LISA on January 19, 2012
  38. Electricity

    Lightning occurs when charges jump the gap between the ----- cloud and the ----- ground? Lightning can go to one of three places. It can: a.________________ b._________________ c._________________ The energy caused by the flow of particles with negative

    asked by Agnes on January 28, 2009
  39. Electricity

    suppose that you're facing a straight current carrying conductor, and the current is following toward you.the lines of magnetic force at any point in the magnetic field will act in? A)the same direction as the current. B)a clockwise direction. C)the

    asked by angela on August 20, 2005
  40. Electricity

    A 3-phase 50Hz, 8 pole induction motor has an effective stator to rotor turns ratio of 4:2, rotor resistance 0.2ohms and rotor standstill reactance 0.3ohms. Calculate the starting torque and maximum torque. At full load the slip is 0.08. Calculate the

    asked by Claire on January 21, 2010
  41. Electricity

    RCL Circuits electricity!? A 50V, 50Hz supply is connected to a series circuit consisting of a resistance, a 20mH inductor and a capacitor. a) Find the value of the capacitance and the power dissipated in the circuit when: (i) The current has a magnitude

    asked by Claire on January 21, 2010
  42. electricity

    Electrons are emitted from a conductor when the conductor is: A. Exposed to weak light B. cooled rapidly c.bombarded by high-speed electrons d.subjected to a small voltage

    asked by Bren on April 18, 2010
  43. electricity

    before you touch a wire in an appliance how should you make sure itiis not hot

    asked by GATOR on December 14, 2008
  44. Electricity

    Just a quick one: Is current (I) directly proportional to resistance (R) in a piece of resistance wire? Would the current - resistance graph be a straight line or a curve? Help greatly appreciated. It would not be a straight line. For a fixed applied

    asked by John on February 25, 2007
  45. electricity

    What resistance must be connected in parallel to 60 ohms to reduce the combined resistance to 15 ohms?

    asked by melissa on February 6, 2017
  46. Electricity

    Refrigerators requires a lot of electricity and uses the most electrical energy in most households. Why do refrigerators require so much energy to be operated?

    asked by Sasha on April 8, 2014
  47. Electricity

    Very very urgent please help me... A small ball with mass =0,4g charged with electricity= 3x10^(-10) coulomb is united with the edge of a silk rope with length=8cm. The other edge of the rope is on a big insulating material with concentration of the

    asked by Ryan on November 2, 2008
  48. electricity

    which of the following frenquencies falls in the range of RF waves used by commercial radio broadcasting stations

    asked by tran on January 31, 2008
  49. electricity

    If one body is positively charged and another is negatively charged what will free electrons do? Generally it flows providing they are touching (or close enough to jump) and are conductors. Please read: http://www.kpsec.freeuk.com/electron.htm

    asked by catherine on June 7, 2007
  50. electricity

    Is there any data about the use of nichrome heating, for instance: a nichrome element in the cables of electric kettles, geysers and spiral stove? What do you mean by "data"? What physical data are you looking for: resistivity?

    asked by tigger needs help on February 7, 2007
  51. electricity

    closed circuits allow current to flow. b b

    asked by bobpursley on August 23, 2005
  52. Electricity

    The best answer is c, but a is also true if the wavelength of the light is chosen correctly. The intensity of the light does not determine the emission of the electrons, the wavelength (energy of light photons) is what determines. c

    asked by bobpursley on August 20, 2005
  53. Electricity

    A battery is connected to the endpoints A and B of a homogeneous wire. Using an ammeter one finds that a current I = 1.5 A flows through the conductor. Then, the wire is bent in the form of a circle and the same battery is connected to points A and B. What

    asked by Anonymous on December 9, 2013
  54. elecTRICITY

    A 9V battery has an electric potential difference of 9V between the positive and negative terminals. How much kinetic energy in J would an electron gain if it moved from the negative terminal to the positive one?

    asked by Anonymous 100 on February 26, 2013
  55. electricity

    if you measure voltage with a multimeter are the leads of the circuit connected in a series or parallel its series right

    asked by LISA on January 19, 2012
  56. electricity

    measure resistance with a multimeter in a circuit is the power going to be off or on i think ON

    asked by LISA on January 19, 2012
  57. electricity

    glass, rubber, porcelain, and paper are examples of electrical

    asked by Anonymous on April 12, 2011
  58. Electricity

    How long will it take to? 500 kms of wire, 1 curcuit breaker at one end and light at the other end. How long will it take, once the breaker is on for the electricity to travel 500kms to turn the light on.

    asked by Kevin on August 6, 2010
  59. Electricity

    The energy caused by the flow of particles with negative electrical charge is called?

    asked by Agnes on January 28, 2009
  60. electricity

    When all parts of a circuit are composed of conducting materials, the circuit is said to be? closed? Complete? Better than the alternative? when an electric current flows through along conductor, each free electron moves: when an electric current flows

    asked by erin on December 3, 2006