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 41 V with a current of 1 A. Use P = VI to calculate the electrical power.
V = 41 V · I = 1 A
2. A circuit component operates at 4 V with a current of 5 A. Use P = VI to calculate the electrical power.
V = 4 V · I = 5 A
3. A circuit component operates at 36 V with a current of 5 A. Use P = VI to calculate the electrical power.
V = 36 V · I = 5 A
4. 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
5. A circuit component operates at 11 V with a current of 2 A. Use P = VI to calculate the electrical power.
V = 11 V · I = 2 A
6. A circuit component operates at 24 V with a current of 13 A. Use P = VI to calculate the electrical power.
V = 24 V · I = 13 A
7. A circuit component operates at 19 V with a current of 1 A. Use P = VI to calculate the electrical power.
V = 19 V · I = 1 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 33 V with a current of 15 A. Use P = VI to calculate the electrical power.
V = 33 V · I = 15 A
10. A circuit component operates at 17 V with a current of 11 A. Use P = VI to calculate the electrical power.
V = 17 V · I = 11 A
11. A circuit component operates at 34 V with a current of 12 A. Use P = VI to calculate the electrical power.
V = 34 V · I = 12 A
12. A circuit component operates at 15 V with a current of 15 A. Use P = VI to calculate the electrical power.
V = 15 V · I = 15 A

12 questions · Seed 52 · 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 41 V with a current of 1 A. Use P = VI to calculate the electrical power.
41 W
Electrical power P = V × I = 41 × 1 = 41 W.
2. A circuit component operates at 4 V with a current of 5 A. Use P = VI to calculate the electrical power.
20 W
Electrical power P = V × I = 4 × 5 = 20 W.
3. A circuit component operates at 36 V with a current of 5 A. Use P = VI to calculate the electrical power.
180 W
Electrical power P = V × I = 36 × 5 = 180 W.
4. 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.
5. A circuit component operates at 11 V with a current of 2 A. Use P = VI to calculate the electrical power.
22 W
Electrical power P = V × I = 11 × 2 = 22 W.
6. A circuit component operates at 24 V with a current of 13 A. Use P = VI to calculate the electrical power.
312 W
Electrical power P = V × I = 24 × 13 = 312 W.
7. A circuit component operates at 19 V with a current of 1 A. Use P = VI to calculate the electrical power.
19 W
Electrical power P = V × I = 19 × 1 = 19 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 33 V with a current of 15 A. Use P = VI to calculate the electrical power.
495 W
Electrical power P = V × I = 33 × 15 = 495 W.
10. A circuit component operates at 17 V with a current of 11 A. Use P = VI to calculate the electrical power.
187 W
Electrical power P = V × I = 17 × 11 = 187 W.
11. A circuit component operates at 34 V with a current of 12 A. Use P = VI to calculate the electrical power.
408 W
Electrical power P = V × I = 34 × 12 = 408 W.
12. A circuit component operates at 15 V with a current of 15 A. Use P = VI to calculate the electrical power.
225 W
Electrical power P = V × I = 15 × 15 = 225 W.

12 questions · Seed 52 · 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 41 V with a current of 1 A. Use P = VI to calculate the electrical power.
V = 41 V · I = 1 A
2. A circuit component operates at 4 V with a current of 5 A. Use P = VI to calculate the electrical power.
V = 4 V · I = 5 A
3. A circuit component operates at 36 V with a current of 5 A. Use P = VI to calculate the electrical power.
V = 36 V · I = 5 A
4. 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
5. A circuit component operates at 11 V with a current of 2 A. Use P = VI to calculate the electrical power.
V = 11 V · I = 2 A
6. A circuit component operates at 24 V with a current of 13 A. Use P = VI to calculate the electrical power.
V = 24 V · I = 13 A
7. A circuit component operates at 19 V with a current of 1 A. Use P = VI to calculate the electrical power.
V = 19 V · I = 1 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 33 V with a current of 15 A. Use P = VI to calculate the electrical power.
V = 33 V · I = 15 A
10. A circuit component operates at 17 V with a current of 11 A. Use P = VI to calculate the electrical power.
V = 17 V · I = 11 A
11. A circuit component operates at 34 V with a current of 12 A. Use P = VI to calculate the electrical power.
V = 34 V · I = 12 A
12. A circuit component operates at 15 V with a current of 15 A. Use P = VI to calculate the electrical power.
V = 15 V · I = 15 A

12 questions · Seed 52 · 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 41 V with a current of 1 A. Use P = VI to calculate the electrical power.
41 W
Electrical power P = V × I = 41 × 1 = 41 W.
2. A circuit component operates at 4 V with a current of 5 A. Use P = VI to calculate the electrical power.
20 W
Electrical power P = V × I = 4 × 5 = 20 W.
3. A circuit component operates at 36 V with a current of 5 A. Use P = VI to calculate the electrical power.
180 W
Electrical power P = V × I = 36 × 5 = 180 W.
4. 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.
5. A circuit component operates at 11 V with a current of 2 A. Use P = VI to calculate the electrical power.
22 W
Electrical power P = V × I = 11 × 2 = 22 W.
6. A circuit component operates at 24 V with a current of 13 A. Use P = VI to calculate the electrical power.
312 W
Electrical power P = V × I = 24 × 13 = 312 W.
7. A circuit component operates at 19 V with a current of 1 A. Use P = VI to calculate the electrical power.
19 W
Electrical power P = V × I = 19 × 1 = 19 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 33 V with a current of 15 A. Use P = VI to calculate the electrical power.
495 W
Electrical power P = V × I = 33 × 15 = 495 W.
10. A circuit component operates at 17 V with a current of 11 A. Use P = VI to calculate the electrical power.
187 W
Electrical power P = V × I = 17 × 11 = 187 W.
11. A circuit component operates at 34 V with a current of 12 A. Use P = VI to calculate the electrical power.
408 W
Electrical power P = V × I = 34 × 12 = 408 W.
12. A circuit component operates at 15 V with a current of 15 A. Use P = VI to calculate the electrical power.
225 W
Electrical power P = V × I = 15 × 15 = 225 W.

12 questions · Seed 52 · Age guidance, not curriculum certification