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 13-15 Ages 16-18

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Worksheet StudioPractice pack · Ages 16-18

Electrical power (P = VI)

Take your time. Show your thinking.

1. A circuit component operates at 20 V with a current of 14 A. Use P = VI to calculate the electrical power.
V = 20 V · I = 14 A
2. A circuit component operates at 47 V with a current of 10 A. Use P = VI to calculate the electrical power.
V = 47 V · I = 10 A
3. A circuit component operates at 15 V with a current of 12 A. Use P = VI to calculate the electrical power.
V = 15 V · I = 12 A
4. A circuit component operates at 32 V with a current of 6 A. Use P = VI to calculate the electrical power.
V = 32 V · I = 6 A
5. A circuit component operates at 43 V with a current of 9 A. Use P = VI to calculate the electrical power.
V = 43 V · I = 9 A
6. A circuit component operates at 18 V with a current of 7 A. Use P = VI to calculate the electrical power.
V = 18 V · I = 7 A
7. A circuit component operates at 32 V with a current of 3 A. Use P = VI to calculate the electrical power.
V = 32 V · I = 3 A
8. A circuit component operates at 9 V with a current of 5 A. Use P = VI to calculate the electrical power.
V = 9 V · I = 5 A
9. A circuit component operates at 32 V with a current of 8 A. Use P = VI to calculate the electrical power.
V = 32 V · I = 8 A
10. A circuit component operates at 23 V with a current of 11 A. Use P = VI to calculate the electrical power.
V = 23 V · I = 11 A
11. A circuit component operates at 42 V with a current of 9 A. Use P = VI to calculate the electrical power.
V = 42 V · I = 9 A
12. A circuit component operates at 13 V with a current of 12 A. Use P = VI to calculate the electrical power.
V = 13 V · I = 12 A

12 questions · Seed 56 · 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. A circuit component operates at 20 V with a current of 14 A. Use P = VI to calculate the electrical power.
280 W
Electrical power P = V × I = 20 × 14 = 280 W.
2. A circuit component operates at 47 V with a current of 10 A. Use P = VI to calculate the electrical power.
470 W
Electrical power P = V × I = 47 × 10 = 470 W.
3. A circuit component operates at 15 V with a current of 12 A. Use P = VI to calculate the electrical power.
180 W
Electrical power P = V × I = 15 × 12 = 180 W.
4. A circuit component operates at 32 V with a current of 6 A. Use P = VI to calculate the electrical power.
192 W
Electrical power P = V × I = 32 × 6 = 192 W.
5. A circuit component operates at 43 V with a current of 9 A. Use P = VI to calculate the electrical power.
387 W
Electrical power P = V × I = 43 × 9 = 387 W.
6. A circuit component operates at 18 V with a current of 7 A. Use P = VI to calculate the electrical power.
126 W
Electrical power P = V × I = 18 × 7 = 126 W.
7. A circuit component operates at 32 V with a current of 3 A. Use P = VI to calculate the electrical power.
96 W
Electrical power P = V × I = 32 × 3 = 96 W.
8. A circuit component operates at 9 V with a current of 5 A. Use P = VI to calculate the electrical power.
45 W
Electrical power P = V × I = 9 × 5 = 45 W.
9. A circuit component operates at 32 V with a current of 8 A. Use P = VI to calculate the electrical power.
256 W
Electrical power P = V × I = 32 × 8 = 256 W.
10. A circuit component operates at 23 V with a current of 11 A. Use P = VI to calculate the electrical power.
253 W
Electrical power P = V × I = 23 × 11 = 253 W.
11. A circuit component operates at 42 V with a current of 9 A. Use P = VI to calculate the electrical power.
378 W
Electrical power P = V × I = 42 × 9 = 378 W.
12. A circuit component operates at 13 V with a current of 12 A. Use P = VI to calculate the electrical power.
156 W
Electrical power P = V × I = 13 × 12 = 156 W.

12 questions · Seed 56 · Age guidance, not curriculum certification

Worksheet StudioPractice pack · Ages 16-18

Electrical power (P = VI)

Take your time. Show your thinking.

1. A circuit component operates at 20 V with a current of 14 A. Use P = VI to calculate the electrical power.
V = 20 V · I = 14 A
2. A circuit component operates at 47 V with a current of 10 A. Use P = VI to calculate the electrical power.
V = 47 V · I = 10 A
3. A circuit component operates at 15 V with a current of 12 A. Use P = VI to calculate the electrical power.
V = 15 V · I = 12 A
4. A circuit component operates at 32 V with a current of 6 A. Use P = VI to calculate the electrical power.
V = 32 V · I = 6 A
5. A circuit component operates at 43 V with a current of 9 A. Use P = VI to calculate the electrical power.
V = 43 V · I = 9 A
6. A circuit component operates at 18 V with a current of 7 A. Use P = VI to calculate the electrical power.
V = 18 V · I = 7 A
7. A circuit component operates at 32 V with a current of 3 A. Use P = VI to calculate the electrical power.
V = 32 V · I = 3 A
8. A circuit component operates at 9 V with a current of 5 A. Use P = VI to calculate the electrical power.
V = 9 V · I = 5 A
9. A circuit component operates at 32 V with a current of 8 A. Use P = VI to calculate the electrical power.
V = 32 V · I = 8 A
10. A circuit component operates at 23 V with a current of 11 A. Use P = VI to calculate the electrical power.
V = 23 V · I = 11 A
11. A circuit component operates at 42 V with a current of 9 A. Use P = VI to calculate the electrical power.
V = 42 V · I = 9 A
12. A circuit component operates at 13 V with a current of 12 A. Use P = VI to calculate the electrical power.
V = 13 V · I = 12 A

12 questions · Seed 56 · Age guidance, not curriculum certification

Worksheet StudioAnswer key · Ages 16-18

Electrical power (P = VI)

Answers and reasoning. Review before teaching.

1. A circuit component operates at 20 V with a current of 14 A. Use P = VI to calculate the electrical power.
280 W
Electrical power P = V × I = 20 × 14 = 280 W.
2. A circuit component operates at 47 V with a current of 10 A. Use P = VI to calculate the electrical power.
470 W
Electrical power P = V × I = 47 × 10 = 470 W.
3. A circuit component operates at 15 V with a current of 12 A. Use P = VI to calculate the electrical power.
180 W
Electrical power P = V × I = 15 × 12 = 180 W.
4. A circuit component operates at 32 V with a current of 6 A. Use P = VI to calculate the electrical power.
192 W
Electrical power P = V × I = 32 × 6 = 192 W.
5. A circuit component operates at 43 V with a current of 9 A. Use P = VI to calculate the electrical power.
387 W
Electrical power P = V × I = 43 × 9 = 387 W.
6. A circuit component operates at 18 V with a current of 7 A. Use P = VI to calculate the electrical power.
126 W
Electrical power P = V × I = 18 × 7 = 126 W.
7. A circuit component operates at 32 V with a current of 3 A. Use P = VI to calculate the electrical power.
96 W
Electrical power P = V × I = 32 × 3 = 96 W.
8. A circuit component operates at 9 V with a current of 5 A. Use P = VI to calculate the electrical power.
45 W
Electrical power P = V × I = 9 × 5 = 45 W.
9. A circuit component operates at 32 V with a current of 8 A. Use P = VI to calculate the electrical power.
256 W
Electrical power P = V × I = 32 × 8 = 256 W.
10. A circuit component operates at 23 V with a current of 11 A. Use P = VI to calculate the electrical power.
253 W
Electrical power P = V × I = 23 × 11 = 253 W.
11. A circuit component operates at 42 V with a current of 9 A. Use P = VI to calculate the electrical power.
378 W
Electrical power P = V × I = 42 × 9 = 378 W.
12. A circuit component operates at 13 V with a current of 12 A. Use P = VI to calculate the electrical power.
156 W
Electrical power P = V × I = 13 × 12 = 156 W.

12 questions · Seed 56 · Age guidance, not curriculum certification