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ScienceAges 16-18

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 16-18

Electrical power (P = VI)

Take your time. Show your thinking.

  1. 1. A circuit component operates at 47 V with a current of 5 A. Use P = VI to calculate the electrical power.

    +−R
    V = 47 V · I = 5 A

  2. 2. A circuit component operates at 10 V with a current of 1 A. Use P = VI to calculate the electrical power.

    +−R
    V = 10 V · I = 1 A

  3. 3. A circuit component operates at 48 V with a current of 1 A. Use P = VI to calculate the electrical power.

    +−R
    V = 48 V · I = 1 A

  4. 4. A circuit component operates at 27 V with a current of 9 A. Use P = VI to calculate the electrical power.

    +−R
    V = 27 V · I = 9 A

  5. 5. A circuit component operates at 20 V with a current of 6 A. Use P = VI to calculate the electrical power.

    +−R
    V = 20 V · I = 6 A

  6. 6. A circuit component operates at 12 V with a current of 11 A. Use P = VI to calculate the electrical power.

    +−R
    V = 12 V · I = 11 A

  7. 7. A circuit component operates at 48 V with a current of 14 A. Use P = VI to calculate the electrical power.

    +−R
    V = 48 V · I = 14 A

  8. 8. A circuit component operates at 33 V with a current of 11 A. Use P = VI to calculate the electrical power.

    +−R
    V = 33 V · I = 11 A

  9. 9. A circuit component operates at 15 V with a current of 7 A. Use P = VI to calculate the electrical power.

    +−R
    V = 15 V · I = 7 A

  10. 10. A circuit component operates at 34 V with a current of 11 A. Use P = VI to calculate the electrical power.

    +−R
    V = 34 V · I = 11 A

  11. 11. A circuit component operates at 49 V with a current of 13 A. Use P = VI to calculate the electrical power.

    +−R
    V = 49 V · I = 13 A

  12. 12. A circuit component operates at 27 V with a current of 6 A. Use P = VI to calculate the electrical power.

    +−R
    V = 27 V · I = 6 A
12 questions · Seed 51 · Age guidance, not curriculum certification
View the answer key
Worksheet StudioAnswer key · Ages 16-18

Electrical power (P = VI)

Answers and reasoning. Review before teaching.

  1. 1. A circuit component operates at 47 V with a current of 5 A. Use P = VI to calculate the electrical power.

    235 W

    Electrical power P = V × I = 47 × 5 = 235 W.

  2. 2. A circuit component operates at 10 V with a current of 1 A. Use P = VI to calculate the electrical power.

    10 W

    Electrical power P = V × I = 10 × 1 = 10 W.

  3. 3. A circuit component operates at 48 V with a current of 1 A. Use P = VI to calculate the electrical power.

    48 W

    Electrical power P = V × I = 48 × 1 = 48 W.

  4. 4. A circuit component operates at 27 V with a current of 9 A. Use P = VI to calculate the electrical power.

    243 W

    Electrical power P = V × I = 27 × 9 = 243 W.

  5. 5. A circuit component operates at 20 V with a current of 6 A. Use P = VI to calculate the electrical power.

    120 W

    Electrical power P = V × I = 20 × 6 = 120 W.

  6. 6. A circuit component operates at 12 V with a current of 11 A. Use P = VI to calculate the electrical power.

    132 W

    Electrical power P = V × I = 12 × 11 = 132 W.

  7. 7. A circuit component operates at 48 V with a current of 14 A. Use P = VI to calculate the electrical power.

    672 W

    Electrical power P = V × I = 48 × 14 = 672 W.

  8. 8. A circuit component operates at 33 V with a current of 11 A. Use P = VI to calculate the electrical power.

    363 W

    Electrical power P = V × I = 33 × 11 = 363 W.

  9. 9. A circuit component operates at 15 V with a current of 7 A. Use P = VI to calculate the electrical power.

    105 W

    Electrical power P = V × I = 15 × 7 = 105 W.

  10. 10. A circuit component operates at 34 V with a current of 11 A. Use P = VI to calculate the electrical power.

    374 W

    Electrical power P = V × I = 34 × 11 = 374 W.

  11. 11. A circuit component operates at 49 V with a current of 13 A. Use P = VI to calculate the electrical power.

    637 W

    Electrical power P = V × I = 49 × 13 = 637 W.

  12. 12. A circuit component operates at 27 V with a current of 6 A. Use P = VI to calculate the electrical power.

    162 W

    Electrical power P = V × I = 27 × 6 = 162 W.

12 questions · Seed 51 · Age guidance, not curriculum certification
Worksheet StudioPractice pack · Ages 16-18

Electrical power (P = VI)

Take your time. Show your thinking.

  1. 1. A circuit component operates at 47 V with a current of 5 A. Use P = VI to calculate the electrical power.

    +−R
    V = 47 V · I = 5 A

  2. 2. A circuit component operates at 10 V with a current of 1 A. Use P = VI to calculate the electrical power.

    +−R
    V = 10 V · I = 1 A

  3. 3. A circuit component operates at 48 V with a current of 1 A. Use P = VI to calculate the electrical power.

    +−R
    V = 48 V · I = 1 A

  4. 4. A circuit component operates at 27 V with a current of 9 A. Use P = VI to calculate the electrical power.

    +−R
    V = 27 V · I = 9 A

  5. 5. A circuit component operates at 20 V with a current of 6 A. Use P = VI to calculate the electrical power.

    +−R
    V = 20 V · I = 6 A

  6. 6. A circuit component operates at 12 V with a current of 11 A. Use P = VI to calculate the electrical power.

    +−R
    V = 12 V · I = 11 A

  7. 7. A circuit component operates at 48 V with a current of 14 A. Use P = VI to calculate the electrical power.

    +−R
    V = 48 V · I = 14 A

  8. 8. A circuit component operates at 33 V with a current of 11 A. Use P = VI to calculate the electrical power.

    +−R
    V = 33 V · I = 11 A

  9. 9. A circuit component operates at 15 V with a current of 7 A. Use P = VI to calculate the electrical power.

    +−R
    V = 15 V · I = 7 A

  10. 10. A circuit component operates at 34 V with a current of 11 A. Use P = VI to calculate the electrical power.

    +−R
    V = 34 V · I = 11 A

  11. 11. A circuit component operates at 49 V with a current of 13 A. Use P = VI to calculate the electrical power.

    +−R
    V = 49 V · I = 13 A

  12. 12. A circuit component operates at 27 V with a current of 6 A. Use P = VI to calculate the electrical power.

    +−R
    V = 27 V · I = 6 A
12 questions · Seed 51 · Age guidance, not curriculum certification
Worksheet StudioAnswer key · Ages 16-18

Electrical power (P = VI)

Answers and reasoning. Review before teaching.

  1. 1. A circuit component operates at 47 V with a current of 5 A. Use P = VI to calculate the electrical power.

    235 W

    Electrical power P = V × I = 47 × 5 = 235 W.

  2. 2. A circuit component operates at 10 V with a current of 1 A. Use P = VI to calculate the electrical power.

    10 W

    Electrical power P = V × I = 10 × 1 = 10 W.

  3. 3. A circuit component operates at 48 V with a current of 1 A. Use P = VI to calculate the electrical power.

    48 W

    Electrical power P = V × I = 48 × 1 = 48 W.

  4. 4. A circuit component operates at 27 V with a current of 9 A. Use P = VI to calculate the electrical power.

    243 W

    Electrical power P = V × I = 27 × 9 = 243 W.

  5. 5. A circuit component operates at 20 V with a current of 6 A. Use P = VI to calculate the electrical power.

    120 W

    Electrical power P = V × I = 20 × 6 = 120 W.

  6. 6. A circuit component operates at 12 V with a current of 11 A. Use P = VI to calculate the electrical power.

    132 W

    Electrical power P = V × I = 12 × 11 = 132 W.

  7. 7. A circuit component operates at 48 V with a current of 14 A. Use P = VI to calculate the electrical power.

    672 W

    Electrical power P = V × I = 48 × 14 = 672 W.

  8. 8. A circuit component operates at 33 V with a current of 11 A. Use P = VI to calculate the electrical power.

    363 W

    Electrical power P = V × I = 33 × 11 = 363 W.

  9. 9. A circuit component operates at 15 V with a current of 7 A. Use P = VI to calculate the electrical power.

    105 W

    Electrical power P = V × I = 15 × 7 = 105 W.

  10. 10. A circuit component operates at 34 V with a current of 11 A. Use P = VI to calculate the electrical power.

    374 W

    Electrical power P = V × I = 34 × 11 = 374 W.

  11. 11. A circuit component operates at 49 V with a current of 13 A. Use P = VI to calculate the electrical power.

    637 W

    Electrical power P = V × I = 49 × 13 = 637 W.

  12. 12. A circuit component operates at 27 V with a current of 6 A. Use P = VI to calculate the electrical power.

    162 W

    Electrical power P = V × I = 27 × 6 = 162 W.

12 questions · Seed 51 · Age guidance, not curriculum certification