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 34 V with a current of 8 A. Use P = VI to calculate the electrical power.
V = 34 V · I = 8 A
2. A circuit component operates at 7 V with a current of 9 A. Use P = VI to calculate the electrical power.
V = 7 V · I = 9 A
3. 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
4. A circuit component operates at 9 V with a current of 6 A. Use P = VI to calculate the electrical power.
V = 9 V · I = 6 A
5. A circuit component operates at 19 V with a current of 2 A. Use P = VI to calculate the electrical power.
V = 19 V · I = 2 A
6. A circuit component operates at 25 V with a current of 13 A. Use P = VI to calculate the electrical power.
V = 25 V · I = 13 A
7. 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
8. A circuit component operates at 36 V with a current of 4 A. Use P = VI to calculate the electrical power.
V = 36 V · I = 4 A
9. A circuit component operates at 24 V with a current of 14 A. Use P = VI to calculate the electrical power.
V = 24 V · I = 14 A
10. A circuit component operates at 48 V with a current of 6 A. Use P = VI to calculate the electrical power.
V = 48 V · I = 6 A
11. A circuit component operates at 15 V with a current of 1 A. Use P = VI to calculate the electrical power.
V = 15 V · I = 1 A
12. A circuit component operates at 36 V with a current of 13 A. Use P = VI to calculate the electrical power.
V = 36 V · I = 13 A

12 questions · Seed 104733 · 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 34 V with a current of 8 A. Use P = VI to calculate the electrical power.
272 W
Electrical power P = V × I = 34 × 8 = 272 W.
2. A circuit component operates at 7 V with a current of 9 A. Use P = VI to calculate the electrical power.
63 W
Electrical power P = V × I = 7 × 9 = 63 W.
3. 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.
4. A circuit component operates at 9 V with a current of 6 A. Use P = VI to calculate the electrical power.
54 W
Electrical power P = V × I = 9 × 6 = 54 W.
5. A circuit component operates at 19 V with a current of 2 A. Use P = VI to calculate the electrical power.
38 W
Electrical power P = V × I = 19 × 2 = 38 W.
6. A circuit component operates at 25 V with a current of 13 A. Use P = VI to calculate the electrical power.
325 W
Electrical power P = V × I = 25 × 13 = 325 W.
7. 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.
8. A circuit component operates at 36 V with a current of 4 A. Use P = VI to calculate the electrical power.
144 W
Electrical power P = V × I = 36 × 4 = 144 W.
9. A circuit component operates at 24 V with a current of 14 A. Use P = VI to calculate the electrical power.
336 W
Electrical power P = V × I = 24 × 14 = 336 W.
10. A circuit component operates at 48 V with a current of 6 A. Use P = VI to calculate the electrical power.
288 W
Electrical power P = V × I = 48 × 6 = 288 W.
11. A circuit component operates at 15 V with a current of 1 A. Use P = VI to calculate the electrical power.
15 W
Electrical power P = V × I = 15 × 1 = 15 W.
12. A circuit component operates at 36 V with a current of 13 A. Use P = VI to calculate the electrical power.
468 W
Electrical power P = V × I = 36 × 13 = 468 W.

12 questions · Seed 104733 · 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 34 V with a current of 8 A. Use P = VI to calculate the electrical power.
V = 34 V · I = 8 A
2. A circuit component operates at 7 V with a current of 9 A. Use P = VI to calculate the electrical power.
V = 7 V · I = 9 A
3. 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
4. A circuit component operates at 9 V with a current of 6 A. Use P = VI to calculate the electrical power.
V = 9 V · I = 6 A
5. A circuit component operates at 19 V with a current of 2 A. Use P = VI to calculate the electrical power.
V = 19 V · I = 2 A
6. A circuit component operates at 25 V with a current of 13 A. Use P = VI to calculate the electrical power.
V = 25 V · I = 13 A
7. 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
8. A circuit component operates at 36 V with a current of 4 A. Use P = VI to calculate the electrical power.
V = 36 V · I = 4 A
9. A circuit component operates at 24 V with a current of 14 A. Use P = VI to calculate the electrical power.
V = 24 V · I = 14 A
10. A circuit component operates at 48 V with a current of 6 A. Use P = VI to calculate the electrical power.
V = 48 V · I = 6 A
11. A circuit component operates at 15 V with a current of 1 A. Use P = VI to calculate the electrical power.
V = 15 V · I = 1 A
12. A circuit component operates at 36 V with a current of 13 A. Use P = VI to calculate the electrical power.
V = 36 V · I = 13 A

12 questions · Seed 104733 · 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 34 V with a current of 8 A. Use P = VI to calculate the electrical power.
272 W
Electrical power P = V × I = 34 × 8 = 272 W.
2. A circuit component operates at 7 V with a current of 9 A. Use P = VI to calculate the electrical power.
63 W
Electrical power P = V × I = 7 × 9 = 63 W.
3. 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.
4. A circuit component operates at 9 V with a current of 6 A. Use P = VI to calculate the electrical power.
54 W
Electrical power P = V × I = 9 × 6 = 54 W.
5. A circuit component operates at 19 V with a current of 2 A. Use P = VI to calculate the electrical power.
38 W
Electrical power P = V × I = 19 × 2 = 38 W.
6. A circuit component operates at 25 V with a current of 13 A. Use P = VI to calculate the electrical power.
325 W
Electrical power P = V × I = 25 × 13 = 325 W.
7. 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.
8. A circuit component operates at 36 V with a current of 4 A. Use P = VI to calculate the electrical power.
144 W
Electrical power P = V × I = 36 × 4 = 144 W.
9. A circuit component operates at 24 V with a current of 14 A. Use P = VI to calculate the electrical power.
336 W
Electrical power P = V × I = 24 × 14 = 336 W.
10. A circuit component operates at 48 V with a current of 6 A. Use P = VI to calculate the electrical power.
288 W
Electrical power P = V × I = 48 × 6 = 288 W.
11. A circuit component operates at 15 V with a current of 1 A. Use P = VI to calculate the electrical power.
15 W
Electrical power P = V × I = 15 × 1 = 15 W.
12. A circuit component operates at 36 V with a current of 13 A. Use P = VI to calculate the electrical power.
468 W
Electrical power P = V × I = 36 × 13 = 468 W.

12 questions · Seed 104733 · Age guidance, not curriculum certification