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ScienceAges 13-15

Electrical power (P = VI)

Use P = VI to calculate electrical power in watts from potential difference and current. Review suitability for your learners before teaching.

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Age band:Ages 13-15Ages 16-18

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Worksheet StudioPractice pack · Ages 13-15

Electrical power (P = VI)

Take your time. Show your thinking.

  1. 1. A circuit component operates at 38 V with a current of 5 A. Use P = VI to calculate the electrical power.

    +−R
    V = 38 V · I = 5 A

  2. 2. A circuit component operates at 15 V with a current of 8 A. Use P = VI to calculate the electrical power.

    +−R
    V = 15 V · I = 8 A

  3. 3. A circuit component operates at 40 V with a current of 6 A. Use P = VI to calculate the electrical power.

    +−R
    V = 40 V · I = 6 A

  4. 4. A circuit component operates at 21 V with a current of 12 A. Use P = VI to calculate the electrical power.

    +−R
    V = 21 V · I = 12 A

  5. 5. A circuit component operates at 46 V with a current of 8 A. Use P = VI to calculate the electrical power.

    +−R
    V = 46 V · I = 8 A

  6. 6. A circuit component operates at 48 V with a current of 11 A. Use P = VI to calculate the electrical power.

    +−R
    V = 48 V · I = 11 A

  7. 7. A circuit component operates at 46 V with a current of 14 A. Use P = VI to calculate the electrical power.

    +−R
    V = 46 V · I = 14 A

  8. 8. A circuit component operates at 10 V with a current of 2 A. Use P = VI to calculate the electrical power.

    +−R
    V = 10 V · I = 2 A

  9. 9. A circuit component operates at 6 V with a current of 8 A. Use P = VI to calculate the electrical power.

    +−R
    V = 6 V · I = 8 A

  10. 10. A circuit component operates at 39 V with a current of 6 A. Use P = VI to calculate the electrical power.

    +−R
    V = 39 V · I = 6 A

  11. 11. A circuit component operates at 36 V with a current of 1 A. Use P = VI to calculate the electrical power.

    +−R
    V = 36 V · I = 1 A

  12. 12. A circuit component operates at 49 V with a current of 2 A. Use P = VI to calculate the electrical power.

    +−R
    V = 49 V · I = 2 A
12 questions · Seed 42 · Age guidance, not curriculum certification
View the answer key
Worksheet StudioAnswer key · Ages 13-15

Electrical power (P = VI)

Answers and reasoning. Review before teaching.

  1. 1. A circuit component operates at 38 V with a current of 5 A. Use P = VI to calculate the electrical power.

    190 W

    Electrical power P = V × I = 38 × 5 = 190 W.

  2. 2. A circuit component operates at 15 V with a current of 8 A. Use P = VI to calculate the electrical power.

    120 W

    Electrical power P = V × I = 15 × 8 = 120 W.

  3. 3. A circuit component operates at 40 V with a current of 6 A. Use P = VI to calculate the electrical power.

    240 W

    Electrical power P = V × I = 40 × 6 = 240 W.

  4. 4. A circuit component operates at 21 V with a current of 12 A. Use P = VI to calculate the electrical power.

    252 W

    Electrical power P = V × I = 21 × 12 = 252 W.

  5. 5. A circuit component operates at 46 V with a current of 8 A. Use P = VI to calculate the electrical power.

    368 W

    Electrical power P = V × I = 46 × 8 = 368 W.

  6. 6. A circuit component operates at 48 V with a current of 11 A. Use P = VI to calculate the electrical power.

    528 W

    Electrical power P = V × I = 48 × 11 = 528 W.

  7. 7. A circuit component operates at 46 V with a current of 14 A. Use P = VI to calculate the electrical power.

    644 W

    Electrical power P = V × I = 46 × 14 = 644 W.

  8. 8. A circuit component operates at 10 V with a current of 2 A. Use P = VI to calculate the electrical power.

    20 W

    Electrical power P = V × I = 10 × 2 = 20 W.

  9. 9. A circuit component operates at 6 V with a current of 8 A. Use P = VI to calculate the electrical power.

    48 W

    Electrical power P = V × I = 6 × 8 = 48 W.

  10. 10. A circuit component operates at 39 V with a current of 6 A. Use P = VI to calculate the electrical power.

    234 W

    Electrical power P = V × I = 39 × 6 = 234 W.

  11. 11. A circuit component operates at 36 V with a current of 1 A. Use P = VI to calculate the electrical power.

    36 W

    Electrical power P = V × I = 36 × 1 = 36 W.

  12. 12. A circuit component operates at 49 V with a current of 2 A. Use P = VI to calculate the electrical power.

    98 W

    Electrical power P = V × I = 49 × 2 = 98 W.

12 questions · Seed 42 · Age guidance, not curriculum certification
Worksheet StudioPractice pack · Ages 13-15

Electrical power (P = VI)

Take your time. Show your thinking.

  1. 1. A circuit component operates at 38 V with a current of 5 A. Use P = VI to calculate the electrical power.

    +−R
    V = 38 V · I = 5 A

  2. 2. A circuit component operates at 15 V with a current of 8 A. Use P = VI to calculate the electrical power.

    +−R
    V = 15 V · I = 8 A

  3. 3. A circuit component operates at 40 V with a current of 6 A. Use P = VI to calculate the electrical power.

    +−R
    V = 40 V · I = 6 A

  4. 4. A circuit component operates at 21 V with a current of 12 A. Use P = VI to calculate the electrical power.

    +−R
    V = 21 V · I = 12 A

  5. 5. A circuit component operates at 46 V with a current of 8 A. Use P = VI to calculate the electrical power.

    +−R
    V = 46 V · I = 8 A

  6. 6. A circuit component operates at 48 V with a current of 11 A. Use P = VI to calculate the electrical power.

    +−R
    V = 48 V · I = 11 A

  7. 7. A circuit component operates at 46 V with a current of 14 A. Use P = VI to calculate the electrical power.

    +−R
    V = 46 V · I = 14 A

  8. 8. A circuit component operates at 10 V with a current of 2 A. Use P = VI to calculate the electrical power.

    +−R
    V = 10 V · I = 2 A

  9. 9. A circuit component operates at 6 V with a current of 8 A. Use P = VI to calculate the electrical power.

    +−R
    V = 6 V · I = 8 A

  10. 10. A circuit component operates at 39 V with a current of 6 A. Use P = VI to calculate the electrical power.

    +−R
    V = 39 V · I = 6 A

  11. 11. A circuit component operates at 36 V with a current of 1 A. Use P = VI to calculate the electrical power.

    +−R
    V = 36 V · I = 1 A

  12. 12. A circuit component operates at 49 V with a current of 2 A. Use P = VI to calculate the electrical power.

    +−R
    V = 49 V · I = 2 A
12 questions · Seed 42 · Age guidance, not curriculum certification
Worksheet StudioAnswer key · Ages 13-15

Electrical power (P = VI)

Answers and reasoning. Review before teaching.

  1. 1. A circuit component operates at 38 V with a current of 5 A. Use P = VI to calculate the electrical power.

    190 W

    Electrical power P = V × I = 38 × 5 = 190 W.

  2. 2. A circuit component operates at 15 V with a current of 8 A. Use P = VI to calculate the electrical power.

    120 W

    Electrical power P = V × I = 15 × 8 = 120 W.

  3. 3. A circuit component operates at 40 V with a current of 6 A. Use P = VI to calculate the electrical power.

    240 W

    Electrical power P = V × I = 40 × 6 = 240 W.

  4. 4. A circuit component operates at 21 V with a current of 12 A. Use P = VI to calculate the electrical power.

    252 W

    Electrical power P = V × I = 21 × 12 = 252 W.

  5. 5. A circuit component operates at 46 V with a current of 8 A. Use P = VI to calculate the electrical power.

    368 W

    Electrical power P = V × I = 46 × 8 = 368 W.

  6. 6. A circuit component operates at 48 V with a current of 11 A. Use P = VI to calculate the electrical power.

    528 W

    Electrical power P = V × I = 48 × 11 = 528 W.

  7. 7. A circuit component operates at 46 V with a current of 14 A. Use P = VI to calculate the electrical power.

    644 W

    Electrical power P = V × I = 46 × 14 = 644 W.

  8. 8. A circuit component operates at 10 V with a current of 2 A. Use P = VI to calculate the electrical power.

    20 W

    Electrical power P = V × I = 10 × 2 = 20 W.

  9. 9. A circuit component operates at 6 V with a current of 8 A. Use P = VI to calculate the electrical power.

    48 W

    Electrical power P = V × I = 6 × 8 = 48 W.

  10. 10. A circuit component operates at 39 V with a current of 6 A. Use P = VI to calculate the electrical power.

    234 W

    Electrical power P = V × I = 39 × 6 = 234 W.

  11. 11. A circuit component operates at 36 V with a current of 1 A. Use P = VI to calculate the electrical power.

    36 W

    Electrical power P = V × I = 36 × 1 = 36 W.

  12. 12. A circuit component operates at 49 V with a current of 2 A. Use P = VI to calculate the electrical power.

    98 W

    Electrical power P = V × I = 49 × 2 = 98 W.

12 questions · Seed 42 · Age guidance, not curriculum certification