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Current, voltage and resistance (V = IR)

8th grade (Year 9 in England) · 16 questions · Common Core: NGSS.HS-PS3-1 · England: KS3 Physics: Electricity and electromagnetism (current electricity), KS4 Combined Science: Electricity

Name

Date

Score/ 16

  1. Question 1

    A 3.75 V battery drives a current of 0.25 A through a lamp. What is the resistance of the lamp, in Ω?

    AnswerΩ

  2. Question 2

    A current of 1 A flows through a 6 Ω resistor. What is the potential difference (voltage) across it, in V?

    AnswerV

  3. Question 3

    A 4 V supply is connected across a 4 Ω resistor. What current flows, in A?

    AnswerA

  4. Question 4

    A 1.5 V battery drives a current of 0.5 A through a lamp. What is the resistance of the lamp, in Ω?

    AnswerΩ

  5. Question 5

    A current of 3 A flows through a 12 Ω resistor. What is the potential difference (voltage) across it, in V?

    AnswerV

  6. Question 6

    A 20 V supply is connected across a 20 Ω resistor. What current flows, in A?

    AnswerA

  7. Question 7

    A 12 V battery drives a current of 2 A through a lamp. What is the resistance of the lamp, in Ω?

    AnswerΩ

  8. Question 8

    A current of 4 A flows through a 20 Ω resistor. What is the potential difference (voltage) across it, in V?

    AnswerV

  9. Question 9

    A 12 V supply is connected across a 6 Ω resistor. What current flows, in A?

    AnswerA

  10. Question 10

    A 7.5 V battery drives a current of 0.5 A through a lamp. What is the resistance of the lamp, in Ω?

    AnswerΩ

  11. Question 11

    A current of 1 A flows through a 10 Ω resistor. What is the potential difference (voltage) across it, in V?

    AnswerV

  12. Question 12

    A 3 V supply is connected across a 6 Ω resistor. What current flows, in A?

    AnswerA

  13. Question 13

    A 2 V battery drives a current of 0.5 A through a lamp. What is the resistance of the lamp, in Ω?

    AnswerΩ

  14. Question 14

    A current of 1 A flows through a 4 Ω resistor. What is the potential difference (voltage) across it, in V?

    AnswerV

  15. Question 15

    A 15 V supply is connected across a 5 Ω resistor. What current flows, in A?

    AnswerA

  16. Question 16

    A 2 V battery drives a current of 0.5 A through a lamp. What is the resistance of the lamp, in Ω?

    AnswerΩ

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Answer key: Current, voltage and resistance (V = IR)

  1. 1. 15 Ω

  2. 2. 6 V

  3. 3. 1 A

  4. 4. 3 Ω

  5. 5. 36 V

  6. 6. 1 A

  7. 7. 6 Ω

  8. 8. 80 V

  9. 9. 2 A

  10. 10. 15 Ω

  11. 11. 10 V

  12. 12. 0.5 A

  13. 13. 4 Ω

  14. 14. 4 V

  15. 15. 3 A

  16. 16. 4 Ω