AQA GCSE Physics 4.2 Electricity overview quiz quiz

The energy transferred per unit charge

The opposition to the flow of charge

The total charge stored in a circuit

The rate of flow of electric charge

$V = IR$

$Q = It$

$P = VI$

$E = Pt$

$3.75\,C$

$60\,C$

$19\,C$

$240\,C$

An S-shaped curve

A line that only goes in one direction

A straight line through the origin

A curve that gets steeper

Potential difference

Resistance

Power

Current

It decreases

It increases

It stays the same

It becomes the sum of the two resistances

$12\,V$ and $50\,Hz$

$230\,V$ and $50\,Hz$

$230\,V$ and $60\,Hz$

$400\,kV$ and $50\,Hz$

Brown, carries the alternating potential difference to the appliance

Blue, completes the circuit and carries current back to the supply

Green and yellow, a safety wire carrying current only in a fault

Green and yellow, carries the main current at all times

$6000\,J$

$36000\,J$

$600000\,J$

$360000\,J$

To reduce the current, lowering the $I^2R$ energy loss in the cables

To increase the current so the grid can deliver much more power to homes

To make the transmission cables thinner and cheaper to manufacture

To make the electricity much safer for people to touch directly

Positive ions

Electrons

Neutrons

Whole atoms

They repel

There is no force

They attract

They first attract then repel