1. The current flowing through an electric circuit is the derivative of the charge as a function of time. If the charge q is given by the equation q(t)=3t^2+2t5, what is the current at t=0? a. 5 b. 0 c
17,931 results
Science
Which statement explains how the charges on objects determine the electric force between them? (1 point) Objects with positive charges repel each other, and objects with negative charges attract each other. Objects with the same charge repel each other,

physics
if one resistor is removed from a parallel circuit, the total current will 1) decrease b) increase c) remain the same and the current flowing through each of the remaining branches ____________________. removing one resistor makes total resistance greater.

Science
One light bulb in a string of lights goes out this causes all other lights in string to go out. This is example of A. Resistor B. parallel circuit C. Closed circuit***** D. Series circuit When a switch is turned from the off to the on position it is

science(check answers)
1.D 2.A 3.A 4.im not sure please help 5.false One light bulb in a string of lights goes out. This causes all of the other lights in the string to also go out. This is an example of a A. resistor. B. parallel circuit. C. closed circuit. D. series circuit.

science
Which circuit will have the greatest electric current? (1 point) circuit 1 circuit 4 circuit 2 circuit 3 Circuit A has a resistance of 7.5 ohms, and circuit B has a resistance of 5 ohms. Which statement about the circuits must be correct?(1 point) If the

physics
1. A typical household circuit is capable of carrying 15.0 Amps of current at 120 V before the circuit breaker will trip. How many 1500W hair dryers can run off one such circuit? In the rush to get ready for lecture, a physics professor leaves the hair

Physics check ASAP
1. Copper is wrapped with rubber when used in electric wiring. What describes rubber as a material? A. Electromagnet B. Superconductor C. Conductor D. Insulator 2. Which material provides resistance to the flow of electrons? A. Saltwater B. Salt Crystals

Science Help Please
A) Which statement explains how the charges on objects determine the electric force between them? (1 point) Objects with positive charges repel each other, and objects with negative charges attract each other. Objects with the same charge repel each other,

Science
Which circuit will have the greatest electric current

College physics
A 3.5A current is maintained in a simple circuit with a total resistance of 1500 W. What net charge passes through any point in the circuit during a thirty second interval?

Physics
Which material provides resistance to the flow of electrons? A. Silver B. Saltwater C. Salt crystals D. Copper A circuit has a resistance of 50.0 ohms. What is the voltage needed to generate a current of 0.02 amps? A. 100 volts B. 2,500 volts C. 0.0004

Sciencee
Two electrical circuits have the same 15volt batteries. Circuit A has 2 ohms of resistance, and circuit B has 6 ohms of resistance. Which of the following statements is correct? (1 point) • Circuit B has the same amount of current as circuit A. •

Physics
A circuit contains six 270 lamps and a 18.0 heater connected in parallel. The voltage across the circuit is 120 V. (a) What is the current in the circuit when four lamps are turned on? (b) What is the current in the circuit when all lamps are on? (c) What

Science
Megan wants to determine if an electrical circuit has electricity flowing through it. Which of the following evidence is proof that the circuit has an electrical current? a)The circuit is a closed loop. b)A light bulb is lit in the circuit. c)The circuit's

Intermediate Algebra
The amount of current flowing into an electrical circuit varies inversely as the resistance in the circuit. When the resistance of a particular circuit is 5 ohms, the current is 42 amperes. what is the current when the resistance is 4 ohms?

Science
Which choice most accurately explains the role of a circuit component in preventing a circuit from getting too hot and catching fire? (Select all that apply) 1A fuse can be used to prevent a circuit from getting too hot. It will melt if the current gets

physics
if one resistor is removed from a parallel circuit, the total current will 1) decrease b) increase c) remain the same and the current flowing through each of the remaining branches ____________________.

Electricity and Electronics
1. A transformer has a primary voltage of 115 V and a secondary voltage of 24 V. If the number of turns in the primary is 345, how many turns are in the secondary? A. 8 B. 690 C. 72 D. 1,653 2. To use your left hand to determine the direction of the

Science
To find the current in a complex circuit, it is necessary to know the potential difference in each device in the circuit. current in each device in the circuit. equivalent resistance of the circuit. number of branches in the circuit. B

Algebra
The electric current I in a circuit varies directly as the voltage V. When 21V are applied, the current is 4A. What is the current when 18 volts are applied

Science
Examine the scenario. A circuit is arranged so that 6 A of current is flowing through it. If the voltage is then tripled, which option correctly describes the effect on the current? a) When the voltage is tripled, there is a greater amount of energy to

physics
which one of the following statements concerning an ac circuit is true? a) when only resistance is present in an ac circuit, voltage and current are in phase. b) on average, the power dissipated by resistor in an ac circuit is zero. c) for a resistor in an

Math
The current, I, in amperes, for an electric circuit is given by the formula I=4.3sin120(pi)t, where t is time, in seconds. a)At what time is the current at its max volume? How does your understanding of co terminal angles help in your solution? b)What time

Physics
(a) In the LC circuit shown in the figure, the current is in the direction shown and the charges on the capacitor have the signs shown. At this time, a) the current is increasing and the charge on the positive plate is increasing. b) the current is

physics
three resistors with values R1,R2 and R3, respectively are connected in series to a 6v battery.the total current flowing through the circuit is I=0.6mA.when these three resistors are connected in parallel to a 6v battery,the total current is I=6.2mA. also

physics
Electric current is a flow of electric charge that moves due to an electric pressure is called what?. A) wattage.B) voltage.C) All of these to some degree.D) None of these.E) amperage. I chose ampere, this is what my textbook tells me and I got it wrong

math;)
1. The current flowing through an electric circuit is the derivative of the charge as a function of time. If the charge q is given by the equation q(t)=3t^2+2t5, what is the current at t=0? a. 5 b. 0 c. 2 d. 8 2. The equation for the position of an

Physics
47. Induction is a process in which a moving ____ produces a(n) ____. a. charge, current c. magnetic field, electric field b. magnet, electric charge d. wave, electric field

science
when all parts of a circuit are composed of conducting materials the circuit is said to be? The circuit is then "closed" including a fullwave rectifier in an AC circuit will yield a  current

physics
1. what happens to the field strength when you halve the distance between two charges? 2. A positive charge of 3.5 uC is located in an electric field of intensity 3.00 N/C directed toward the south. Find the magnitude and the direction of the force on the

Physical sciences
1 term question 1 if object a exerts a force on onject b,object b exerts an equal force on object a,but in the opposite direction waves in which the particles vibrate in a direction perpendicular to the direction in which the wave energy is propagated 3

Science
So I need help with a lab, I'm not looking for answers, I want to know if my answers make sense, so this is the pre lab introduction: In a series circuit, electrons travel along a single pathway. The movement of the electrons through the circuit produces

Science
Two electrical circuits have the same 15volt batteries. Circuit A has 2 ohms of resistance, and circuit B has 6 ohms of resistance. Which of the following statements is correct? • Circuit B has the same amount of current as circuit A. • Circuit B has

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

Science
To find the current in a complex circuit, it is necessary to know the potential difference in each device in the circuit. current in each device in the circuit. equivalent resistance of the circuit. number of branches in the circuit. C

physics
If a charge of 25 coulombs passes a given point in circuit in a time of 125 minutes determine the current in the circuit

physics
a series RLC circuit has a peak current of 4 A with a frequency of 23 kHz. if the resistance of the circuit is 60 kohm, the capacitance of the circuit is 16 uF, and the unductance of the circuit is 24 uH, determine the average power of the circuit. Include

Science Electricity
A complete circuit requires an _____ ____ for electricity to flow from the ______to the _______ in the circuit and ______to the battery. I'm trying to fill in the blanks. I think the first two are electric current think the second two are positive and

Science
Electric circuit with three cells each of emf 2v and negligible internal resistances are connected in series with an ammeter two resistors of resistance 2 and 6 and a key. 1. Draw a diagram for the above information 2.calculate the current in the circuit

Science
What happens when the voltage in an electric circuit goes up? The force in the electric current goes down. The charge of the electric current goes up. The number of volts goes down. The number of electrons in the circuit goes up.

Physics
How can you increase the current flowing in an electric circuit?

science
A charge of 10 coulombs has been travelling through the wire of a simple circuit,with a current of 3 A. How long has the current been flowing?

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

physics
One coulomb of charge passes through a point in an electric circuit every ten seconds. What is the current of the circuit?

Electric field
In a simple electric circuit 1.6 J of energy are supplied to a lamp in 0.10 s. The charge transferred through the circuit is o.20 C. The average current is?

Physical sciences
1 term question 1 if object a exerts a force on onject b,object b exerts an equal force on object a,but in the opposite direction 2 waves in which the particles vibrate in a direction perpendicular to the direction in which the wave energy is propagated 3

Physical sciences
1 term question 1 if object a exerts a force on onject b,object b exerts an equal force on object a,but in the opposite direction waves in which the particles vibrate in a direction perpendicular to the direction in which the wave energy is propagated 3

Physical sciences
1 term question 1 if object a exerts a force on onject b,object b exerts an equal force on object a,but in the opposite direction 2 waves in which the particles vibrate in a direction perpendicular to the direction in which the wave energy is propagated 3

physcial science
Does a light bulb glow because.... a) there is burning inside b) an electric current glows c) the filament is hot d) a very small current is flowing Wouldn't you think it was because the filament was hot? Of course, a very small current also CAN make a

physics
please check these for me: When a positive charge moves in the direction of the electric field, what happens to the electrical potential energy associated with the charge? a. it increases b. it decreases c. it remains the same d. it sharply increases, and

Electricity and Electronics
if the resistance of an circuit is 12 ohms and the voltage in the circuit is 60 V, the current flowing through the circuit is? Are you talking d.c.? E = IR, solve for I and I = E/R E = 60 V R = 12 ohoms

PhysicsOhms Law
Will you check my answers please? A volt is a unit of current and an amprere is a unit of current. It is common to call electric potential difference voltage A current of 1 ampere is a flow of charge at the rate of 1 coulomb per second. When a charge of

Science
My question is, What was the function of a capacitor in an electric current? Could someone please help me I ruled out one of my theorys already and that was to increase circuit power. Was it to allow current flow between its plates? Was it to measure the

Science
An electromagnet in a galvanometer A. Increases the voltage in a circuit B. moves a pointer along a numbered scale in response to a current. C. induces an electric current. D. increases the current in a circuit. I got A, but apparently that is wrong....a

physics
an electric heating element is conneceted to a 110V circuit and a current of 3.2 a is flowing through the element. How much energy is used up during a period of 5 hours by the element?

physics
if one resistor is removed from a parallel circuit, the total current will 1) decrease b) increase c) remain the same and the current flowing through each of the remaining branches ____________________. removing one resistor makes total resistance greater.

Physics
if one resistor is removed from a parallel circuit, the total current will 1) decrease b) increase c) remain the same and the current flowing through each of the remaining branches ____________________. okay so the total current will decrease, but what

Assist me Plzz!
What is the p.d. between 2 points in a circuit if 200J of electrical energy are changed to other forms of energy when 25 coulombs of electric charge pass? If the charge flows in 10 seconds, what is the current? Science help needed here. Vq=energy you know

Physics
A circuit is composed of a capacitor C=3 μF, two resistors both with resistance R=69 Ohm, an inductor L=6.00e2 H, a switch S, and a battery V=25 V. The internal resistance of the battery can be ignored . Reminder: The "L=x.xxenn H" notation means

Physics
A solenoid has N=1760.0 turns, length d=40 cm , and radius b=0.4 cm, (bL/R) after S1 is closed? . (d) How much energy (in J) is stored in the magnetic field of the coil a very long time (t>>L/R) after S1 is closed? For the next part, assume that a very

Physics
Three resistors (14.4 Ω, 21.7 Ω, 14.1 Ω) are connected in parallel across 98 V. What is the total resistance for this circuit? What is the voltage drop across the 21.7 Ω resistor? What current is flowing in the 14.1 Ω resistor? What is the total

Physics
A solenoid has N=1568.0 turns, length d=32 cm , and radius b=0.2 cm, (bL/R) after S1 is closed? . unanswered (d) How much energy (in J) is stored in the magnetic field of the coil a very long time (t>>L/R) after S1 is closed? For the next part, assume that

Physics
A solenoid has N=1760.0 turns, length d=40 cm , and radius b=0.4 cm, (bL/R) after S1 is closed? . unanswered (d) How much energy (in J) is stored in the magnetic field of the coil a very long time (t>>L/R) after S1 is closed? unanswered For the next part,

Physics
Consider the series RLC circuit in which R2

mathematical physics
A series circuit consist of a resister with R = 200ohm, an inductor with L = 1H, a capacitor with C = 0.002F, and a 12V battery.If the initial charge and current are both O, Find the charge and current at time t.

mathematical physics
A series circuit consists of a resister with R = 200 ohm, an inductor with L = 1H, a capacitor with C = 0.002F, and a 12V battery. If the initial charge and current are both 0, find the charge and current at time t.

mathematical physics
A series circuit consist of a resister with R =200 ohm, an inductor with L=1H, a capacitor with C = 0.002F, and a 12V battery.If the initial charge and current are both 0, find the charge and current at time t.

science
do you think the current flowing through every portion is same in a circuit?

Math
Amperes (abbreviated amp) measure the strength of electric current. An ohm is the unit of electrical resistance. In an electric circuit, the current varies inversely as the resistance. If the current is 24 amps when the resistance is 20 ohms, find the

Electronic engineering
Three resistors of resistance 50,30,40 ohms are connected in series across 100V suppliers. (I).Draw circuit (II).Calculate the total resistance. (III).Total current flowing through the circuit. (v). Voltage drop across each resistor.

physics urgent!
The magnetic field in the region shown below is increasing by 5 T/s. The circuit shown (with R=25 , C=55 µF, dimensions 1 m by 2 m) is inserted into the region as shown. The capacitor is initially uncharged. 1. What is the current in the circuit at the

science
what is the applied voltage on a circuit in which .5 amperes current is flowing and 10 W is generated?

Physics
A 15 μA current starts flowing in a circuit with a 3.0 μF capacitor of area 40 cm^2 at t = 0 s.(a) How fast is the voltage across the capacitor plates changing at t = 0 s? (b) Use the result of (a) to calculate the following at t = 0 s.(i) dφB/dt in

Physics
Consider the series RLC circuit in which R2

physics
a series RLC circuit has a peak current of 4 A with a frequency of 23 kHz. if the resistance of the circuit is 60 kohm, the capacitance of the circuit is 16 uF, and the unductance of the circuit is 24 uH, determine the average power of the circuit.

Physic
a series RLC circuit has a peak current of 4 A with a frequency of 23 kHz. if the resistance of the circuit is 60 kohm, the capacitance of the circuit is 16 uF, and the unductance of the circuit is 24 uH, determine the average power of the circuit.

Physics
At one instant, a current of 8.0 A flows through part of a circuit as shown in the figure below. Determine the instantaneous potential difference between points A and B if the current starts to decrease at a constant rate of 1.0 ✕ 102 A/s. (Assume that R

Physics/Eletrical engineering
Which of the following is a conducting loop in which electrons carrying electric energy may be transferred from a suitable source to do a useful work and returned to the source? a.) Direct current b.) Indirect current c.) Electric circuit d.) source of

Physics
A circuit is composed of a capacitor C=2 μF, two resistors both with resistance R=11 Ohm, an inductor L=4.00e2 H, a switch S, and a battery V=5 V. The internal resistance of the battery can be ignored . Reminder: The "L=x.xxenn H" notation means

physics
a series RLC circuit has a peak current of 4 A with a frequency of 23 kHz. if the resistance of the circuit is 60 kohm, the capacitance of the circuit is 16 uF, and the unductance of the circuit is 24 uH, determine the average power of the circuit. Include

Physics
At one instant, a current of 8.0 A flows through part of a circuit as shown in the figure below. Determine the instantaneous potential difference between points A and B if the current starts to decrease at a constant rate of 1.0 ✕ 102 A/s. (Assume that R

Physical Science
ok so i keep getting one wrong on a 4 question test and failing so can someone tell me what im getting wrong 1. What causes an electric current in a wire? A. Electric fields cause atoms to move in the wire. B. Electrons flow because of electrical

physics
An RC circuit contains a 3.9 kΩ resistor and a 5 µF capacitor. When the switch is first closed in the circuit, a maximum current of 1.5 mA flows in the circuit. Using Equation (1), find the time at which the current flow will have fallen to 1.0 mA.

Math
The electric current I in a circuit varies directly as the voltage V. When 21V are applied, the current is 4A. What is the current when 18 volts are applied

Physics (electricity and Magnetism)
A long straight and thin wire has a charge Q per unit length. It is also carrying a current I. A point charge is moving with a velocity v parallel to the conductor, at a distance d from it. Find the velocity v, supposing a correct direction for the current

physics
A 9 V battery is connected in series with a 100 Ω resistor and 12µF capacitor. The capacitor is initially uncharged. What is the capacitive time constant of the circuit? How much charge q(t) is in the capacitor after two time constants?. What is the

Physics
Consider the series RLC circuit in which R2

science e.m.f.?
please explain to me what is e.m.f. e.m.f. stands for electromotive force. It is the work done per unit charge (Joules per Coulomb) by an electric field when electric charge goes from point A to point B. It is measured in Volts. 1 Volt = 1 Joule/Coulomb If

Physics
Need help matching the numbers to a  f. I need some explanations to understand. 4. The water enters the pump at a low pressure and the pump does work on the water to eject it at high pressure and with more energy. 5. The water pump provides the motive

physics
1. If the voltage impressed across a circuit is constant but the resistance increases by a factor of 15. By what factor does the current change? 2. If the resistance of a circuit remains constant while the voltage across the circuit decreases by a factor

physics
Need help matching the numbers to a  f. 4. The water enters the pump at a low pressure and the pump does work on the water to eject it at high pressure and with more energy. 5. The water pump provides the motive force that pushes water through the pipes.

PHYSICS
Consider the circuit in Figure P32.17, taking script e = 6 V, L = 5.00 mH, and R = 7.00 . Figure P32.17 (a) What is the inductive time constant of the circuit? ms (b) Calculate the current in the circuit 250 µs after the switch is closed. A (c) What is

science
what is the importance of fuses? They are placed in electrical equipment and in houses (although most houses now use circuit breakers) as safety devices. If a short occurs and too much electrical current is going through the circuit, the fuse "blows"

Physics
A circuit is composed of a capacitor C= 3 micro F, two resistors both with resistance 69 Ohm, an inductor 6.00e2 H, a switch , and a battery 25 V. The internal resistance of the battery can be ignored . Reminder: The " L=x.xxenn H" notation means " L=x.xx

Algebra
In a 120 volt electrical circuit having a resistance of 16 ohms, the available power P in watts is a function of I, the amount of current flowing in amperes. If P(I)=120I16I^2, how many amperes will produce the maximum power in the circuit? What is the

12th Calculus
suppose that at any tiem t(sec) the current i(amp) in an alternating current circuit is i=2cost+2sint. What is the peak (largest magnitude) current for this circuit?

physics
a series RLC circuit has a peak current of 1 A with a frequency of 54 kHz. if the resistance of the circuit is 51 kHz, the capacitance of the circuit is 19 uF and the inductance of the circuit is 25 uF, determine the average power of the circuit.

Physics
In the following circuit R_1=3 Ohm, R_2=10 Ohm, C=0.003 Farad, V=5 Volts. At time t =0 we connect the power supply to the circuit. At t=0 the capacitor is uncharged. (a) What is the time constant tau (in seconds) to charge up the capacitor? (b) What is the

Physics
The Circuit contains a resistor R1, Resistor with R2 and an inductance L in series with a battery of emf ε0=V0 . R2 having a switch in parallel, the switch S is initially closed. At t = 0, the switch S is opened, so that an additional very large

Physics
A circuit consists of 5 resistors and 3 batteries (see diagram); the connecting wires have all a negligible resistance. The values for R1 , R2 , R3 , R4 , and R5 are 14 Ω, 41 Ω, 68 Ω, 83 Ω, and 110 Ωrespectively. The batteries have a negligible