Question 1

What is the formula for calculating electric current?

Accepted Answer

I = Q/t

Answer

I = Q + t

Answer

I = Q × t

Answer

I = t/Q

Question 2

If a current of 3 Amperes flows for 5 seconds, how much charge has passed?

Accepted Answer

15 C

Answer

1.5 C

Answer

0.6 C

Answer

8 C

Question 3

What is the unit of electric current?

Accepted Answer

Ampere

Answer

Joule

Answer

Coulomb

Answer

Volt

Question 4

If 12 Coulombs of charge flow through a conductor in 4 seconds, what is the current?

Accepted Answer

0.125

Answer

0.5 A

Answer

0.16666666666666666

Answer

0.3333333333333333

Question 5

What does one Ampere represent?

Accepted Answer

1 Coulomb per second

Answer

1 Watt per second

Answer

1 Joule per second

Answer

1 Volt per second

Question 6

If a current of 2 Amperes flows through a conductor for 6 seconds, how much charge flows?

Accepted Answer

12 C

Answer

3 C

Answer

1 C

Answer

0.5 C

Question 7

What is the charge of a single electron?

Accepted Answer

-1.6×10⁻¹⁹ C

Answer

+1.6×10⁻¹⁹ C

Answer

-3.2×10⁻¹⁹ C

Answer

+6.25×10¹⁸ C

Question 8

How many electrons are approximately in one Coulomb of charge?

Accepted Answer

6.25×10¹⁸

Answer

1.6×10¹⁹

Answer

1×10¹⁹

Answer

3.2×10¹⁸

Question 9

What is the voltage if 10 Joules of work are done to move 2 Coulombs of charge?

Accepted Answer

5 V

Answer

20 V

Answer

2 V

Answer

10 V

Question 10

A circuit has a current of 5 Amperes. How much charge passes through it in 2 seconds?

Accepted Answer

10 C

Answer

2.5 C

Answer

1 C

Answer

5 C

Question 11

If 1.5 Coulombs of charge pass through a point in 3 seconds, what is the current?

Accepted Answer

0.5 A

Answer

0.041666666666666664

Answer

0.125

Answer

0.08333333333333333

Question 12

What does voltage represent in an electrical circuit?

Accepted Answer

The potential energy difference

Answer

The resistance to current flow

Answer

The total energy in the circuit

Answer

The amount of charge per second

Question 13

If 3 Joules of energy are used to move 1.5 Coulombs of charge, what is the potential difference?

Accepted Answer

2 V

Answer

1 V

Answer

0.5 V

Answer

3 V

Question 14

How much work is done when 4 Coulombs of charge move across a potential difference of 9 Volts?

Accepted Answer

36 J

Answer

1 J

Answer

2.25 J

Answer

13 J

Question 15

If a battery supplies a potential difference of 12 Volts and 2 Coulombs of charge move through it, what is the total energy transferred?

Accepted Answer

24 J

Answer

12 J

Answer

6 J

Answer

36 J

Question 16

A conductor has a current of 0.25 A for 8 seconds. How much charge passes through?

Accepted Answer

2 C

Answer

0.5 C

Answer

8 C

Answer

1.5 C

Question 17

How many electrons flow per second if 2 Amperes of current flow in a conductor?

Accepted Answer

3.2×10¹⁹

Answer

6.25×10¹⁸

Answer

1.25×10¹⁸

Answer

1.25×10¹⁹

Question 18

A 9-Volt battery is used to move 1 Coulomb of charge. How much work is done?

Accepted Answer

9 J

Answer

1 J

Answer

10 J

Answer

0.9 J

Question 19

If 15 Coulombs of charge move through a potential difference of 3 Volts, what is the total work done?

Accepted Answer

45 J

Answer

50 J

Answer

10 J

Answer

5 J

Question 20

A device has a potential difference of 4.5 Volts and transfers 18 Joules of energy. How much charge has moved through it?

Accepted Answer

4 C

Answer

8 C

Answer

1 C

Answer

3 C

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