P2

Question 1

Current

Answer 1

The rate of flow of charge in a circuit.

Question 2

Potential Difference

Answer 2

Also called voltage. The difference in potential between two points of a circuit. Causes a current to flow.

Question 3

Charge

Answer 3

Charge is the amount of electricity travelling through a

circuit

Question 4

Resistance

Answer 4

Anything that slows the flow of charge around a circuit.
Resistance is usually caused by electrons colliding with
ions in a material.

Question 5

Series Circuit

Answer 5

A circuit with a single loop of wire

Question 6

Parallel Circuit

Answer 6

A circuit with two or more loops (branches) of wire.

Question 7

Direct Potential difference

Answer 7

A direct potential difference will produce a direct current (dc) (a current in which the charge carriers move in one direction only). Batteries are dc.

Question 8

Alternating Potential difference

Answer 8

An alternating potential difference will produce an alternating current (ac) (a current in which the charge carriers move backwards and forwards).

Mains electricity is ac.

Question 9

Power

Answer 9

When electrical appliances are connected into a circuit energy is transferred to the appliance. The rate at which energy is transferred to the appliance is the power rating of the appliance.