Voltage, current and resistance quiz

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This quiz has 9 questions. Click Submit at the end to mark it. No personal data is collected.

1. What happens when the battery voltage is increased?

1 point

The bulb gets brighter

The bulb gets dimmer

The bulb stays the same brightness

The bulb stays unlit

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2. What happens to the current when the battery voltage is increased?

1 point

The current stays the same

The current decreases

The current increases

The current drops to zero

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3. What happens to the potential on this side of the circuit when the battery voltage is increased?

1 point

The potential stays the same

The potential decreases

The potential increases

The potential drops to zero

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4. How can you tell from our simulation that the bulb gets brighter?

1 point

The red energy circle around the bulb expands faster

The red energy circle around the bulb expands slower

The red energy circle around the bulb expands at the same rate

The red energy circle around the bulb disappears

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5. Why does the bulb get brighter when the battery voltage is increased?

1 point

Only because charges arrive at the bulb quicker

Only because each charge loses more energy as it moves through the bulb

Because charges arrive quicker at the bulb AND each charge loses more energy as it goes through the bulb

Because charges arrive at the bulb slower but lose more energy

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6. What happens to the brightness of the bulb if you swap it for one with a higher resistance?

1 point

It gets dimmer

It gets brighter

It goes out

It alternates between bright and dim

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7. What happens to the current through the bulb if you swap it for one with a higher resistance?

1 point

The current increases

The current decreases

The current drops to zero

The current changes direction

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8. Complete this sentence: Changing the resistance in a simple circuit...

1 point

keeps the voltages the same but changes the current

keeps the current the same but changes the voltages

changes both the current and the voltages

keeps both the current and the voltages the same

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9. When you make a change in a circuit, like changing the battery voltage or changing the resistance...

1 point

it takes a long time for the circuit to settle down into the new patterns of potential or currents because the charges move very slowly

the new patterns of potential or currents are set up almost instantly everywhere round the circuit

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