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 13-15 Ages 16-18

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Worksheet StudioPractice pack · Ages 13-15

Electrical power (P = VI)

Take your time. Show your thinking.

1. A circuit component operates at 40 V with a current of 14 A. Use P = VI to calculate the electrical power.
V = 40 V · I = 14 A
2. A circuit component operates at 3 V with a current of 5 A. Use P = VI to calculate the electrical power.
V = 3 V · I = 5 A
3. A circuit component operates at 30 V with a current of 10 A. Use P = VI to calculate the electrical power.
V = 30 V · I = 10 A
4. A circuit component operates at 14 V with a current of 2 A. Use P = VI to calculate the electrical power.
V = 14 V · I = 2 A
5. A circuit component operates at 43 V with a current of 3 A. Use P = VI to calculate the electrical power.
V = 43 V · I = 3 A
6. A circuit component operates at 45 V with a current of 6 A. Use P = VI to calculate the electrical power.
V = 45 V · I = 6 A
7. A circuit component operates at 37 V with a current of 5 A. Use P = VI to calculate the electrical power.
V = 37 V · I = 5 A
8. A circuit component operates at 39 V with a current of 11 A. Use P = VI to calculate the electrical power.
V = 39 V · I = 11 A
9. A circuit component operates at 39 V with a current of 8 A. Use P = VI to calculate the electrical power.
V = 39 V · I = 8 A
10. A circuit component operates at 28 V with a current of 9 A. Use P = VI to calculate the electrical power.
V = 28 V · I = 9 A
11. A circuit component operates at 21 V with a current of 9 A. Use P = VI to calculate the electrical power.
V = 21 V · I = 9 A
12. A circuit component operates at 49 V with a current of 8 A. Use P = VI to calculate the electrical power.
V = 49 V · I = 8 A

12 questions · Seed 104729 · 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. A circuit component operates at 40 V with a current of 14 A. Use P = VI to calculate the electrical power.
560 W
Electrical power P = V × I = 40 × 14 = 560 W.
2. A circuit component operates at 3 V with a current of 5 A. Use P = VI to calculate the electrical power.
15 W
Electrical power P = V × I = 3 × 5 = 15 W.
3. A circuit component operates at 30 V with a current of 10 A. Use P = VI to calculate the electrical power.
300 W
Electrical power P = V × I = 30 × 10 = 300 W.
4. A circuit component operates at 14 V with a current of 2 A. Use P = VI to calculate the electrical power.
28 W
Electrical power P = V × I = 14 × 2 = 28 W.
5. A circuit component operates at 43 V with a current of 3 A. Use P = VI to calculate the electrical power.
129 W
Electrical power P = V × I = 43 × 3 = 129 W.
6. A circuit component operates at 45 V with a current of 6 A. Use P = VI to calculate the electrical power.
270 W
Electrical power P = V × I = 45 × 6 = 270 W.
7. A circuit component operates at 37 V with a current of 5 A. Use P = VI to calculate the electrical power.
185 W
Electrical power P = V × I = 37 × 5 = 185 W.
8. A circuit component operates at 39 V with a current of 11 A. Use P = VI to calculate the electrical power.
429 W
Electrical power P = V × I = 39 × 11 = 429 W.
9. A circuit component operates at 39 V with a current of 8 A. Use P = VI to calculate the electrical power.
312 W
Electrical power P = V × I = 39 × 8 = 312 W.
10. A circuit component operates at 28 V with a current of 9 A. Use P = VI to calculate the electrical power.
252 W
Electrical power P = V × I = 28 × 9 = 252 W.
11. A circuit component operates at 21 V with a current of 9 A. Use P = VI to calculate the electrical power.
189 W
Electrical power P = V × I = 21 × 9 = 189 W.
12. A circuit component operates at 49 V with a current of 8 A. Use P = VI to calculate the electrical power.
392 W
Electrical power P = V × I = 49 × 8 = 392 W.

12 questions · Seed 104729 · Age guidance, not curriculum certification

Worksheet StudioPractice pack · Ages 13-15

Electrical power (P = VI)

Take your time. Show your thinking.

1. A circuit component operates at 40 V with a current of 14 A. Use P = VI to calculate the electrical power.
V = 40 V · I = 14 A
2. A circuit component operates at 3 V with a current of 5 A. Use P = VI to calculate the electrical power.
V = 3 V · I = 5 A
3. A circuit component operates at 30 V with a current of 10 A. Use P = VI to calculate the electrical power.
V = 30 V · I = 10 A
4. A circuit component operates at 14 V with a current of 2 A. Use P = VI to calculate the electrical power.
V = 14 V · I = 2 A
5. A circuit component operates at 43 V with a current of 3 A. Use P = VI to calculate the electrical power.
V = 43 V · I = 3 A
6. A circuit component operates at 45 V with a current of 6 A. Use P = VI to calculate the electrical power.
V = 45 V · I = 6 A
7. A circuit component operates at 37 V with a current of 5 A. Use P = VI to calculate the electrical power.
V = 37 V · I = 5 A
8. A circuit component operates at 39 V with a current of 11 A. Use P = VI to calculate the electrical power.
V = 39 V · I = 11 A
9. A circuit component operates at 39 V with a current of 8 A. Use P = VI to calculate the electrical power.
V = 39 V · I = 8 A
10. A circuit component operates at 28 V with a current of 9 A. Use P = VI to calculate the electrical power.
V = 28 V · I = 9 A
11. A circuit component operates at 21 V with a current of 9 A. Use P = VI to calculate the electrical power.
V = 21 V · I = 9 A
12. A circuit component operates at 49 V with a current of 8 A. Use P = VI to calculate the electrical power.
V = 49 V · I = 8 A

12 questions · Seed 104729 · Age guidance, not curriculum certification

Worksheet StudioAnswer key · Ages 13-15

Electrical power (P = VI)

Answers and reasoning. Review before teaching.

1. A circuit component operates at 40 V with a current of 14 A. Use P = VI to calculate the electrical power.
560 W
Electrical power P = V × I = 40 × 14 = 560 W.
2. A circuit component operates at 3 V with a current of 5 A. Use P = VI to calculate the electrical power.
15 W
Electrical power P = V × I = 3 × 5 = 15 W.
3. A circuit component operates at 30 V with a current of 10 A. Use P = VI to calculate the electrical power.
300 W
Electrical power P = V × I = 30 × 10 = 300 W.
4. A circuit component operates at 14 V with a current of 2 A. Use P = VI to calculate the electrical power.
28 W
Electrical power P = V × I = 14 × 2 = 28 W.
5. A circuit component operates at 43 V with a current of 3 A. Use P = VI to calculate the electrical power.
129 W
Electrical power P = V × I = 43 × 3 = 129 W.
6. A circuit component operates at 45 V with a current of 6 A. Use P = VI to calculate the electrical power.
270 W
Electrical power P = V × I = 45 × 6 = 270 W.
7. A circuit component operates at 37 V with a current of 5 A. Use P = VI to calculate the electrical power.
185 W
Electrical power P = V × I = 37 × 5 = 185 W.
8. A circuit component operates at 39 V with a current of 11 A. Use P = VI to calculate the electrical power.
429 W
Electrical power P = V × I = 39 × 11 = 429 W.
9. A circuit component operates at 39 V with a current of 8 A. Use P = VI to calculate the electrical power.
312 W
Electrical power P = V × I = 39 × 8 = 312 W.
10. A circuit component operates at 28 V with a current of 9 A. Use P = VI to calculate the electrical power.
252 W
Electrical power P = V × I = 28 × 9 = 252 W.
11. A circuit component operates at 21 V with a current of 9 A. Use P = VI to calculate the electrical power.
189 W
Electrical power P = V × I = 21 × 9 = 189 W.
12. A circuit component operates at 49 V with a current of 8 A. Use P = VI to calculate the electrical power.
392 W
Electrical power P = V × I = 49 × 8 = 392 W.

12 questions · Seed 104729 · Age guidance, not curriculum certification