Questions where students often pick the tempting wrong answer — make sure you know the right one:
What does voltage (potential difference) across a component represent?✗ Voltage is the 'amount of electricity' flowing through the wire.✓ The energy transferred per unit charge passing through that component.
What happens to the total resistance when you add another resistor in parallel?✗ Adding any resistor always increases the total resistance.✓ Total resistance decreases — there are more paths for current to flow.
In a series circuit with two identical bulbs:✗ each bulb gets full supply voltage✓ voltage is shared equally
Practise Electricity — free games
Test yourself with these quick revision games for this topic:
