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 12 V with a current of 2 A. Use P = VI to calculate the electrical power.
V = 12 V · I = 2 A
2. A circuit component operates at 20 V with a current of 12 A. Use P = VI to calculate the electrical power.
V = 20 V · I = 12 A
3. A circuit component operates at 31 V with a current of 10 A. Use P = VI to calculate the electrical power.
V = 31 V · I = 10 A
4. A circuit component operates at 34 V with a current of 4 A. Use P = VI to calculate the electrical power.
V = 34 V · I = 4 A
5. A circuit component operates at 23 V with a current of 15 A. Use P = VI to calculate the electrical power.
V = 23 V · I = 15 A
6. A circuit component operates at 10 V with a current of 15 A. Use P = VI to calculate the electrical power.
V = 10 V · I = 15 A
7. A circuit component operates at 23 V with a current of 3 A. Use P = VI to calculate the electrical power.
V = 23 V · I = 3 A
8. A circuit component operates at 27 V with a current of 5 A. Use P = VI to calculate the electrical power.
V = 27 V · I = 5 A
9. A circuit component operates at 44 V with a current of 9 A. Use P = VI to calculate the electrical power.
V = 44 V · I = 9 A
10. 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
11. A circuit component operates at 22 V with a current of 9 A. Use P = VI to calculate the electrical power.
V = 22 V · I = 9 A
12. A circuit component operates at 26 V with a current of 7 A. Use P = VI to calculate the electrical power.
V = 26 V · I = 7 A

12 questions · Seed 104732 · 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 12 V with a current of 2 A. Use P = VI to calculate the electrical power.
24 W
Electrical power P = V × I = 12 × 2 = 24 W.
2. A circuit component operates at 20 V with a current of 12 A. Use P = VI to calculate the electrical power.
240 W
Electrical power P = V × I = 20 × 12 = 240 W.
3. A circuit component operates at 31 V with a current of 10 A. Use P = VI to calculate the electrical power.
310 W
Electrical power P = V × I = 31 × 10 = 310 W.
4. A circuit component operates at 34 V with a current of 4 A. Use P = VI to calculate the electrical power.
136 W
Electrical power P = V × I = 34 × 4 = 136 W.
5. A circuit component operates at 23 V with a current of 15 A. Use P = VI to calculate the electrical power.
345 W
Electrical power P = V × I = 23 × 15 = 345 W.
6. A circuit component operates at 10 V with a current of 15 A. Use P = VI to calculate the electrical power.
150 W
Electrical power P = V × I = 10 × 15 = 150 W.
7. A circuit component operates at 23 V with a current of 3 A. Use P = VI to calculate the electrical power.
69 W
Electrical power P = V × I = 23 × 3 = 69 W.
8. A circuit component operates at 27 V with a current of 5 A. Use P = VI to calculate the electrical power.
135 W
Electrical power P = V × I = 27 × 5 = 135 W.
9. A circuit component operates at 44 V with a current of 9 A. Use P = VI to calculate the electrical power.
396 W
Electrical power P = V × I = 44 × 9 = 396 W.
10. 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.
11. A circuit component operates at 22 V with a current of 9 A. Use P = VI to calculate the electrical power.
198 W
Electrical power P = V × I = 22 × 9 = 198 W.
12. A circuit component operates at 26 V with a current of 7 A. Use P = VI to calculate the electrical power.
182 W
Electrical power P = V × I = 26 × 7 = 182 W.

12 questions · Seed 104732 · 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 12 V with a current of 2 A. Use P = VI to calculate the electrical power.
V = 12 V · I = 2 A
2. A circuit component operates at 20 V with a current of 12 A. Use P = VI to calculate the electrical power.
V = 20 V · I = 12 A
3. A circuit component operates at 31 V with a current of 10 A. Use P = VI to calculate the electrical power.
V = 31 V · I = 10 A
4. A circuit component operates at 34 V with a current of 4 A. Use P = VI to calculate the electrical power.
V = 34 V · I = 4 A
5. A circuit component operates at 23 V with a current of 15 A. Use P = VI to calculate the electrical power.
V = 23 V · I = 15 A
6. A circuit component operates at 10 V with a current of 15 A. Use P = VI to calculate the electrical power.
V = 10 V · I = 15 A
7. A circuit component operates at 23 V with a current of 3 A. Use P = VI to calculate the electrical power.
V = 23 V · I = 3 A
8. A circuit component operates at 27 V with a current of 5 A. Use P = VI to calculate the electrical power.
V = 27 V · I = 5 A
9. A circuit component operates at 44 V with a current of 9 A. Use P = VI to calculate the electrical power.
V = 44 V · I = 9 A
10. 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
11. A circuit component operates at 22 V with a current of 9 A. Use P = VI to calculate the electrical power.
V = 22 V · I = 9 A
12. A circuit component operates at 26 V with a current of 7 A. Use P = VI to calculate the electrical power.
V = 26 V · I = 7 A

12 questions · Seed 104732 · 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 12 V with a current of 2 A. Use P = VI to calculate the electrical power.
24 W
Electrical power P = V × I = 12 × 2 = 24 W.
2. A circuit component operates at 20 V with a current of 12 A. Use P = VI to calculate the electrical power.
240 W
Electrical power P = V × I = 20 × 12 = 240 W.
3. A circuit component operates at 31 V with a current of 10 A. Use P = VI to calculate the electrical power.
310 W
Electrical power P = V × I = 31 × 10 = 310 W.
4. A circuit component operates at 34 V with a current of 4 A. Use P = VI to calculate the electrical power.
136 W
Electrical power P = V × I = 34 × 4 = 136 W.
5. A circuit component operates at 23 V with a current of 15 A. Use P = VI to calculate the electrical power.
345 W
Electrical power P = V × I = 23 × 15 = 345 W.
6. A circuit component operates at 10 V with a current of 15 A. Use P = VI to calculate the electrical power.
150 W
Electrical power P = V × I = 10 × 15 = 150 W.
7. A circuit component operates at 23 V with a current of 3 A. Use P = VI to calculate the electrical power.
69 W
Electrical power P = V × I = 23 × 3 = 69 W.
8. A circuit component operates at 27 V with a current of 5 A. Use P = VI to calculate the electrical power.
135 W
Electrical power P = V × I = 27 × 5 = 135 W.
9. A circuit component operates at 44 V with a current of 9 A. Use P = VI to calculate the electrical power.
396 W
Electrical power P = V × I = 44 × 9 = 396 W.
10. 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.
11. A circuit component operates at 22 V with a current of 9 A. Use P = VI to calculate the electrical power.
198 W
Electrical power P = V × I = 22 × 9 = 198 W.
12. A circuit component operates at 26 V with a current of 7 A. Use P = VI to calculate the electrical power.
182 W
Electrical power P = V × I = 26 × 7 = 182 W.

12 questions · Seed 104732 · Age guidance, not curriculum certification