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 3 V with a current of 1 A. Use P = VI to calculate the electrical power.
V = 3 V · I = 1 A
2. A circuit component operates at 6 V with a current of 8 A. Use P = VI to calculate the electrical power.
V = 6 V · I = 8 A
3. A circuit component operates at 28 V with a current of 13 A. Use P = VI to calculate the electrical power.
V = 28 V · I = 13 A
4. A circuit component operates at 10 V with a current of 10 A. Use P = VI to calculate the electrical power.
V = 10 V · I = 10 A
5. A circuit component operates at 47 V with a current of 6 A. Use P = VI to calculate the electrical power.
V = 47 V · I = 6 A
6. A circuit component operates at 46 V with a current of 3 A. Use P = VI to calculate the electrical power.
V = 46 V · I = 3 A
7. A circuit component operates at 24 V with a current of 6 A. Use P = VI to calculate the electrical power.
V = 24 V · I = 6 A
8. A circuit component operates at 38 V with a current of 11 A. Use P = VI to calculate the electrical power.
V = 38 V · I = 11 A
9. 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
10. A circuit component operates at 19 V with a current of 3 A. Use P = VI to calculate the electrical power.
V = 19 V · I = 3 A
11. A circuit component operates at 50 V with a current of 3 A. Use P = VI to calculate the electrical power.
V = 50 V · I = 3 A
12. A circuit component operates at 27 V with a current of 4 A. Use P = VI to calculate the electrical power.
V = 27 V · I = 4 A

12 questions · Seed 48 · 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 3 V with a current of 1 A. Use P = VI to calculate the electrical power.
3 W
Electrical power P = V × I = 3 × 1 = 3 W.
2. A circuit component operates at 6 V with a current of 8 A. Use P = VI to calculate the electrical power.
48 W
Electrical power P = V × I = 6 × 8 = 48 W.
3. A circuit component operates at 28 V with a current of 13 A. Use P = VI to calculate the electrical power.
364 W
Electrical power P = V × I = 28 × 13 = 364 W.
4. A circuit component operates at 10 V with a current of 10 A. Use P = VI to calculate the electrical power.
100 W
Electrical power P = V × I = 10 × 10 = 100 W.
5. A circuit component operates at 47 V with a current of 6 A. Use P = VI to calculate the electrical power.
282 W
Electrical power P = V × I = 47 × 6 = 282 W.
6. A circuit component operates at 46 V with a current of 3 A. Use P = VI to calculate the electrical power.
138 W
Electrical power P = V × I = 46 × 3 = 138 W.
7. A circuit component operates at 24 V with a current of 6 A. Use P = VI to calculate the electrical power.
144 W
Electrical power P = V × I = 24 × 6 = 144 W.
8. A circuit component operates at 38 V with a current of 11 A. Use P = VI to calculate the electrical power.
418 W
Electrical power P = V × I = 38 × 11 = 418 W.
9. 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.
10. A circuit component operates at 19 V with a current of 3 A. Use P = VI to calculate the electrical power.
57 W
Electrical power P = V × I = 19 × 3 = 57 W.
11. A circuit component operates at 50 V with a current of 3 A. Use P = VI to calculate the electrical power.
150 W
Electrical power P = V × I = 50 × 3 = 150 W.
12. A circuit component operates at 27 V with a current of 4 A. Use P = VI to calculate the electrical power.
108 W
Electrical power P = V × I = 27 × 4 = 108 W.

12 questions · Seed 48 · 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 3 V with a current of 1 A. Use P = VI to calculate the electrical power.
V = 3 V · I = 1 A
2. A circuit component operates at 6 V with a current of 8 A. Use P = VI to calculate the electrical power.
V = 6 V · I = 8 A
3. A circuit component operates at 28 V with a current of 13 A. Use P = VI to calculate the electrical power.
V = 28 V · I = 13 A
4. A circuit component operates at 10 V with a current of 10 A. Use P = VI to calculate the electrical power.
V = 10 V · I = 10 A
5. A circuit component operates at 47 V with a current of 6 A. Use P = VI to calculate the electrical power.
V = 47 V · I = 6 A
6. A circuit component operates at 46 V with a current of 3 A. Use P = VI to calculate the electrical power.
V = 46 V · I = 3 A
7. A circuit component operates at 24 V with a current of 6 A. Use P = VI to calculate the electrical power.
V = 24 V · I = 6 A
8. A circuit component operates at 38 V with a current of 11 A. Use P = VI to calculate the electrical power.
V = 38 V · I = 11 A
9. 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
10. A circuit component operates at 19 V with a current of 3 A. Use P = VI to calculate the electrical power.
V = 19 V · I = 3 A
11. A circuit component operates at 50 V with a current of 3 A. Use P = VI to calculate the electrical power.
V = 50 V · I = 3 A
12. A circuit component operates at 27 V with a current of 4 A. Use P = VI to calculate the electrical power.
V = 27 V · I = 4 A

12 questions · Seed 48 · 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 3 V with a current of 1 A. Use P = VI to calculate the electrical power.
3 W
Electrical power P = V × I = 3 × 1 = 3 W.
2. A circuit component operates at 6 V with a current of 8 A. Use P = VI to calculate the electrical power.
48 W
Electrical power P = V × I = 6 × 8 = 48 W.
3. A circuit component operates at 28 V with a current of 13 A. Use P = VI to calculate the electrical power.
364 W
Electrical power P = V × I = 28 × 13 = 364 W.
4. A circuit component operates at 10 V with a current of 10 A. Use P = VI to calculate the electrical power.
100 W
Electrical power P = V × I = 10 × 10 = 100 W.
5. A circuit component operates at 47 V with a current of 6 A. Use P = VI to calculate the electrical power.
282 W
Electrical power P = V × I = 47 × 6 = 282 W.
6. A circuit component operates at 46 V with a current of 3 A. Use P = VI to calculate the electrical power.
138 W
Electrical power P = V × I = 46 × 3 = 138 W.
7. A circuit component operates at 24 V with a current of 6 A. Use P = VI to calculate the electrical power.
144 W
Electrical power P = V × I = 24 × 6 = 144 W.
8. A circuit component operates at 38 V with a current of 11 A. Use P = VI to calculate the electrical power.
418 W
Electrical power P = V × I = 38 × 11 = 418 W.
9. 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.
10. A circuit component operates at 19 V with a current of 3 A. Use P = VI to calculate the electrical power.
57 W
Electrical power P = V × I = 19 × 3 = 57 W.
11. A circuit component operates at 50 V with a current of 3 A. Use P = VI to calculate the electrical power.
150 W
Electrical power P = V × I = 50 × 3 = 150 W.
12. A circuit component operates at 27 V with a current of 4 A. Use P = VI to calculate the electrical power.
108 W
Electrical power P = V × I = 27 × 4 = 108 W.

12 questions · Seed 48 · Age guidance, not curriculum certification