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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 25 V with a current of 8 A. Use P = VI to calculate the electrical power.

    +−R
    V = 25 V · I = 8 A

  2. 2. A circuit component operates at 37 V with a current of 11 A. Use P = VI to calculate the electrical power.

    +−R
    V = 37 V · I = 11 A

  3. 3. A circuit component operates at 5 V with a current of 12 A. Use P = VI to calculate the electrical power.

    +−R
    V = 5 V · I = 12 A

  4. 4. 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

  5. 5. A circuit component operates at 43 V with a current of 7 A. Use P = VI to calculate the electrical power.

    +−R
    V = 43 V · I = 7 A

  6. 6. A circuit component operates at 4 V with a current of 14 A. Use P = VI to calculate the electrical power.

    +−R
    V = 4 V · I = 14 A

  7. 7. A circuit component operates at 22 V with a current of 8 A. Use P = VI to calculate the electrical power.

    +−R
    V = 22 V · I = 8 A

  8. 8. A circuit component operates at 22 V with a current of 9 A. Use P = VI to calculate the electrical power.

    +−R
    V = 22 V · I = 9 A

  9. 9. A circuit component operates at 19 V with a current of 7 A. Use P = VI to calculate the electrical power.

    +−R
    V = 19 V · I = 7 A

  10. 10. A circuit component operates at 20 V with a current of 4 A. Use P = VI to calculate the electrical power.

    +−R
    V = 20 V · I = 4 A

  11. 11. A circuit component operates at 19 V with a current of 13 A. Use P = VI to calculate the electrical power.

    +−R
    V = 19 V · I = 13 A

  12. 12. A circuit component operates at 16 V with a current of 8 A. Use P = VI to calculate the electrical power.

    +−R
    V = 16 V · I = 8 A
12 questions · Seed 57 · 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 25 V with a current of 8 A. Use P = VI to calculate the electrical power.

    200 W

    Electrical power P = V × I = 25 × 8 = 200 W.

  2. 2. A circuit component operates at 37 V with a current of 11 A. Use P = VI to calculate the electrical power.

    407 W

    Electrical power P = V × I = 37 × 11 = 407 W.

  3. 3. A circuit component operates at 5 V with a current of 12 A. Use P = VI to calculate the electrical power.

    60 W

    Electrical power P = V × I = 5 × 12 = 60 W.

  4. 4. 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.

  5. 5. A circuit component operates at 43 V with a current of 7 A. Use P = VI to calculate the electrical power.

    301 W

    Electrical power P = V × I = 43 × 7 = 301 W.

  6. 6. A circuit component operates at 4 V with a current of 14 A. Use P = VI to calculate the electrical power.

    56 W

    Electrical power P = V × I = 4 × 14 = 56 W.

  7. 7. A circuit component operates at 22 V with a current of 8 A. Use P = VI to calculate the electrical power.

    176 W

    Electrical power P = V × I = 22 × 8 = 176 W.

  8. 8. A circuit component operates at 22 V with a current of 9 A. Use P = VI to calculate the electrical power.

    198 W

    Electrical power P = V × I = 22 × 9 = 198 W.

  9. 9. A circuit component operates at 19 V with a current of 7 A. Use P = VI to calculate the electrical power.

    133 W

    Electrical power P = V × I = 19 × 7 = 133 W.

  10. 10. A circuit component operates at 20 V with a current of 4 A. Use P = VI to calculate the electrical power.

    80 W

    Electrical power P = V × I = 20 × 4 = 80 W.

  11. 11. A circuit component operates at 19 V with a current of 13 A. Use P = VI to calculate the electrical power.

    247 W

    Electrical power P = V × I = 19 × 13 = 247 W.

  12. 12. A circuit component operates at 16 V with a current of 8 A. Use P = VI to calculate the electrical power.

    128 W

    Electrical power P = V × I = 16 × 8 = 128 W.

12 questions · Seed 57 · 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 25 V with a current of 8 A. Use P = VI to calculate the electrical power.

    +−R
    V = 25 V · I = 8 A

  2. 2. A circuit component operates at 37 V with a current of 11 A. Use P = VI to calculate the electrical power.

    +−R
    V = 37 V · I = 11 A

  3. 3. A circuit component operates at 5 V with a current of 12 A. Use P = VI to calculate the electrical power.

    +−R
    V = 5 V · I = 12 A

  4. 4. 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

  5. 5. A circuit component operates at 43 V with a current of 7 A. Use P = VI to calculate the electrical power.

    +−R
    V = 43 V · I = 7 A

  6. 6. A circuit component operates at 4 V with a current of 14 A. Use P = VI to calculate the electrical power.

    +−R
    V = 4 V · I = 14 A

  7. 7. A circuit component operates at 22 V with a current of 8 A. Use P = VI to calculate the electrical power.

    +−R
    V = 22 V · I = 8 A

  8. 8. A circuit component operates at 22 V with a current of 9 A. Use P = VI to calculate the electrical power.

    +−R
    V = 22 V · I = 9 A

  9. 9. A circuit component operates at 19 V with a current of 7 A. Use P = VI to calculate the electrical power.

    +−R
    V = 19 V · I = 7 A

  10. 10. A circuit component operates at 20 V with a current of 4 A. Use P = VI to calculate the electrical power.

    +−R
    V = 20 V · I = 4 A

  11. 11. A circuit component operates at 19 V with a current of 13 A. Use P = VI to calculate the electrical power.

    +−R
    V = 19 V · I = 13 A

  12. 12. A circuit component operates at 16 V with a current of 8 A. Use P = VI to calculate the electrical power.

    +−R
    V = 16 V · I = 8 A
12 questions · Seed 57 · 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 25 V with a current of 8 A. Use P = VI to calculate the electrical power.

    200 W

    Electrical power P = V × I = 25 × 8 = 200 W.

  2. 2. A circuit component operates at 37 V with a current of 11 A. Use P = VI to calculate the electrical power.

    407 W

    Electrical power P = V × I = 37 × 11 = 407 W.

  3. 3. A circuit component operates at 5 V with a current of 12 A. Use P = VI to calculate the electrical power.

    60 W

    Electrical power P = V × I = 5 × 12 = 60 W.

  4. 4. 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.

  5. 5. A circuit component operates at 43 V with a current of 7 A. Use P = VI to calculate the electrical power.

    301 W

    Electrical power P = V × I = 43 × 7 = 301 W.

  6. 6. A circuit component operates at 4 V with a current of 14 A. Use P = VI to calculate the electrical power.

    56 W

    Electrical power P = V × I = 4 × 14 = 56 W.

  7. 7. A circuit component operates at 22 V with a current of 8 A. Use P = VI to calculate the electrical power.

    176 W

    Electrical power P = V × I = 22 × 8 = 176 W.

  8. 8. A circuit component operates at 22 V with a current of 9 A. Use P = VI to calculate the electrical power.

    198 W

    Electrical power P = V × I = 22 × 9 = 198 W.

  9. 9. A circuit component operates at 19 V with a current of 7 A. Use P = VI to calculate the electrical power.

    133 W

    Electrical power P = V × I = 19 × 7 = 133 W.

  10. 10. A circuit component operates at 20 V with a current of 4 A. Use P = VI to calculate the electrical power.

    80 W

    Electrical power P = V × I = 20 × 4 = 80 W.

  11. 11. A circuit component operates at 19 V with a current of 13 A. Use P = VI to calculate the electrical power.

    247 W

    Electrical power P = V × I = 19 × 13 = 247 W.

  12. 12. A circuit component operates at 16 V with a current of 8 A. Use P = VI to calculate the electrical power.

    128 W

    Electrical power P = V × I = 16 × 8 = 128 W.

12 questions · Seed 57 · Age guidance, not curriculum certification