Question 1

What is electrical current?

Accepted Answer

Flow of electric charge

Answer

Flow of water

Answer

Flow of neutrons

Answer

Flow of protons

Question 2

Which formula calculates the size of the current?

Accepted Answer

I = Q ⁄ t

Answer

Q = I ⁄ t

Answer

I = t ⁄ Q

Answer

I = Q x t

Question 3

What does the size of the electric current depend on?

Accepted Answer

The rate of flow of electric charge

Answer

The rate of flow of neutrons

Answer

The rate of flow of protons

Answer

The rate of flow of atoms

Question 4

What is the unit of current?

Accepted Answer

Amperes

Answer

Joules

Answer

Volts

Answer

Ohms

Question 5

What is the unit of charge?

Accepted Answer

Coulombs

Answer

Amperes

Answer

Volts

Answer

Ohms

Question 6

What is potential difference?

Accepted Answer

Work done per coulomb of charge that passes between two points

Answer

Work done per coulomb of charge that passes between three points

Answer

Kinetic energy per coulomb of charge that passes between two points

Answer

Work done per ampere of current that passes between two points

Question 7

What is the formula for potential difference?

Accepted Answer

V = W ⁄ Q

Answer

V = 5W ⁄ 3Q

Answer

V = W ⁄ 2Q

Answer

V = 3W ⁄ 2Q

Question 8

What can be calculated from Current-Potential Difference graphs?

Accepted Answer

Resistance

Answer

Nothing

Answer

Magnetism

Answer

Resistivity

Question 9

What is the size of the current in a circuit if the charge, Q, is 100C and lasts for 25 seconds?

Accepted Answer

4A

Answer

3A

Answer

2A

Answer

1A

Question 10

What is the work done in a circuit if the voltage is 10V, the current is 4A and the circuit is on for 25 seconds?

Accepted Answer

1000J

Answer

200J

Answer

800J

Answer

500J

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