Practice Electric Potential Difference (11.2) - Electricity

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8 questions

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6 sample questions

Question 1.
What is electric potential difference?
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Think about the units involved and what they measure.
Question 2.
What unit is used to measure potential difference?
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Consider the relationship between joules and coulombs.
3Question 3.
What does electric potential difference measure?
- Work done
- Current flow
- Resistance
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Think about what voltage represents in a circuit.
4Question 4.
True or False: A voltmeter is used to measure current.
- True
- False
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Recall the function of different measuring instruments.
Question 5.
An electric circuit has a potential difference of 12 V and the current flowing through it is 3 A. Calculate the resistance.
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Use the formula derived from Ohm's Law.
Question 6.
If the potential difference across a conductor is increased from 10 V to 20 V and the resistance remains constant at 5 ohms, what is the change in current?
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Calculate the current before and after the change.

4 more questions in this section. Enroll free to practise them all.