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 3 V with a current of 14 A. Use P = VI to calculate the electrical power.
V = 3 V · I = 14 A
2. A circuit component operates at 17 V with a current of 2 A. Use P = VI to calculate the electrical power.
V = 17 V · I = 2 A
3. A circuit component operates at 8 V with a current of 10 A. Use P = VI to calculate the electrical power.
V = 8 V · I = 10 A
4. A circuit component operates at 25 V with a current of 9 A. Use P = VI to calculate the electrical power.
V = 25 V · I = 9 A
5. A circuit component operates at 6 V with a current of 4 A. Use P = VI to calculate the electrical power.
V = 6 V · I = 4 A
6. A circuit component operates at 32 V with a current of 11 A. Use P = VI to calculate the electrical power.
V = 32 V · I = 11 A
7. A circuit component operates at 6 V with a current of 2 A. Use P = VI to calculate the electrical power.
V = 6 V · I = 2 A
8. A circuit component operates at 13 V with a current of 13 A. Use P = VI to calculate the electrical power.
V = 13 V · I = 13 A
9. A circuit component operates at 10 V with a current of 2 A. Use P = VI to calculate the electrical power.
V = 10 V · I = 2 A
10. A circuit component operates at 22 V with a current of 15 A. Use P = VI to calculate the electrical power.
V = 22 V · I = 15 A
11. A circuit component operates at 25 V with a current of 4 A. Use P = VI to calculate the electrical power.
V = 25 V · I = 4 A
12. A circuit component operates at 30 V with a current of 7 A. Use P = VI to calculate the electrical power.
V = 30 V · I = 7 A

12 questions · Seed 53 · 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 3 V with a current of 14 A. Use P = VI to calculate the electrical power.
42 W
Electrical power P = V × I = 3 × 14 = 42 W.
2. A circuit component operates at 17 V with a current of 2 A. Use P = VI to calculate the electrical power.
34 W
Electrical power P = V × I = 17 × 2 = 34 W.
3. A circuit component operates at 8 V with a current of 10 A. Use P = VI to calculate the electrical power.
80 W
Electrical power P = V × I = 8 × 10 = 80 W.
4. A circuit component operates at 25 V with a current of 9 A. Use P = VI to calculate the electrical power.
225 W
Electrical power P = V × I = 25 × 9 = 225 W.
5. A circuit component operates at 6 V with a current of 4 A. Use P = VI to calculate the electrical power.
24 W
Electrical power P = V × I = 6 × 4 = 24 W.
6. A circuit component operates at 32 V with a current of 11 A. Use P = VI to calculate the electrical power.
352 W
Electrical power P = V × I = 32 × 11 = 352 W.
7. A circuit component operates at 6 V with a current of 2 A. Use P = VI to calculate the electrical power.
12 W
Electrical power P = V × I = 6 × 2 = 12 W.
8. A circuit component operates at 13 V with a current of 13 A. Use P = VI to calculate the electrical power.
169 W
Electrical power P = V × I = 13 × 13 = 169 W.
9. A circuit component operates at 10 V with a current of 2 A. Use P = VI to calculate the electrical power.
20 W
Electrical power P = V × I = 10 × 2 = 20 W.
10. A circuit component operates at 22 V with a current of 15 A. Use P = VI to calculate the electrical power.
330 W
Electrical power P = V × I = 22 × 15 = 330 W.
11. A circuit component operates at 25 V with a current of 4 A. Use P = VI to calculate the electrical power.
100 W
Electrical power P = V × I = 25 × 4 = 100 W.
12. A circuit component operates at 30 V with a current of 7 A. Use P = VI to calculate the electrical power.
210 W
Electrical power P = V × I = 30 × 7 = 210 W.

12 questions · Seed 53 · 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 3 V with a current of 14 A. Use P = VI to calculate the electrical power.
V = 3 V · I = 14 A
2. A circuit component operates at 17 V with a current of 2 A. Use P = VI to calculate the electrical power.
V = 17 V · I = 2 A
3. A circuit component operates at 8 V with a current of 10 A. Use P = VI to calculate the electrical power.
V = 8 V · I = 10 A
4. A circuit component operates at 25 V with a current of 9 A. Use P = VI to calculate the electrical power.
V = 25 V · I = 9 A
5. A circuit component operates at 6 V with a current of 4 A. Use P = VI to calculate the electrical power.
V = 6 V · I = 4 A
6. A circuit component operates at 32 V with a current of 11 A. Use P = VI to calculate the electrical power.
V = 32 V · I = 11 A
7. A circuit component operates at 6 V with a current of 2 A. Use P = VI to calculate the electrical power.
V = 6 V · I = 2 A
8. A circuit component operates at 13 V with a current of 13 A. Use P = VI to calculate the electrical power.
V = 13 V · I = 13 A
9. A circuit component operates at 10 V with a current of 2 A. Use P = VI to calculate the electrical power.
V = 10 V · I = 2 A
10. A circuit component operates at 22 V with a current of 15 A. Use P = VI to calculate the electrical power.
V = 22 V · I = 15 A
11. A circuit component operates at 25 V with a current of 4 A. Use P = VI to calculate the electrical power.
V = 25 V · I = 4 A
12. A circuit component operates at 30 V with a current of 7 A. Use P = VI to calculate the electrical power.
V = 30 V · I = 7 A

12 questions · Seed 53 · 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 3 V with a current of 14 A. Use P = VI to calculate the electrical power.
42 W
Electrical power P = V × I = 3 × 14 = 42 W.
2. A circuit component operates at 17 V with a current of 2 A. Use P = VI to calculate the electrical power.
34 W
Electrical power P = V × I = 17 × 2 = 34 W.
3. A circuit component operates at 8 V with a current of 10 A. Use P = VI to calculate the electrical power.
80 W
Electrical power P = V × I = 8 × 10 = 80 W.
4. A circuit component operates at 25 V with a current of 9 A. Use P = VI to calculate the electrical power.
225 W
Electrical power P = V × I = 25 × 9 = 225 W.
5. A circuit component operates at 6 V with a current of 4 A. Use P = VI to calculate the electrical power.
24 W
Electrical power P = V × I = 6 × 4 = 24 W.
6. A circuit component operates at 32 V with a current of 11 A. Use P = VI to calculate the electrical power.
352 W
Electrical power P = V × I = 32 × 11 = 352 W.
7. A circuit component operates at 6 V with a current of 2 A. Use P = VI to calculate the electrical power.
12 W
Electrical power P = V × I = 6 × 2 = 12 W.
8. A circuit component operates at 13 V with a current of 13 A. Use P = VI to calculate the electrical power.
169 W
Electrical power P = V × I = 13 × 13 = 169 W.
9. A circuit component operates at 10 V with a current of 2 A. Use P = VI to calculate the electrical power.
20 W
Electrical power P = V × I = 10 × 2 = 20 W.
10. A circuit component operates at 22 V with a current of 15 A. Use P = VI to calculate the electrical power.
330 W
Electrical power P = V × I = 22 × 15 = 330 W.
11. A circuit component operates at 25 V with a current of 4 A. Use P = VI to calculate the electrical power.
100 W
Electrical power P = V × I = 25 × 4 = 100 W.
12. A circuit component operates at 30 V with a current of 7 A. Use P = VI to calculate the electrical power.
210 W
Electrical power P = V × I = 30 × 7 = 210 W.

12 questions · Seed 53 · Age guidance, not curriculum certification