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 36 V with a current of 13 A. Use P = VI to calculate the electrical power.
V = 36 V · I = 13 A
2. A circuit component operates at 50 V with a current of 2 A. Use P = VI to calculate the electrical power.
V = 50 V · I = 2 A
3. A circuit component operates at 40 V with a current of 15 A. Use P = VI to calculate the electrical power.
V = 40 V · I = 15 A
4. A circuit component operates at 34 V with a current of 11 A. Use P = VI to calculate the electrical power.
V = 34 V · I = 11 A
5. A circuit component operates at 17 V with a current of 10 A. Use P = VI to calculate the electrical power.
V = 17 V · I = 10 A
6. A circuit component operates at 35 V with a current of 9 A. Use P = VI to calculate the electrical power.
V = 35 V · I = 9 A
7. A circuit component operates at 37 V with a current of 3 A. Use P = VI to calculate the electrical power.
V = 37 V · I = 3 A
8. A circuit component operates at 6 V with a current of 5 A. Use P = VI to calculate the electrical power.
V = 6 V · I = 5 A
9. A circuit component operates at 14 V with a current of 12 A. Use P = VI to calculate the electrical power.
V = 14 V · I = 12 A
10. A circuit component operates at 32 V with a current of 4 A. Use P = VI to calculate the electrical power.
V = 32 V · I = 4 A
11. A circuit component operates at 7 V with a current of 6 A. Use P = VI to calculate the electrical power.
V = 7 V · I = 6 A
12. A circuit component operates at 26 V with a current of 10 A. Use P = VI to calculate the electrical power.
V = 26 V · I = 10 A

12 questions · Seed 55 · 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 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.
2. A circuit component operates at 50 V with a current of 2 A. Use P = VI to calculate the electrical power.
100 W
Electrical power P = V × I = 50 × 2 = 100 W.
3. A circuit component operates at 40 V with a current of 15 A. Use P = VI to calculate the electrical power.
600 W
Electrical power P = V × I = 40 × 15 = 600 W.
4. A circuit component operates at 34 V with a current of 11 A. Use P = VI to calculate the electrical power.
374 W
Electrical power P = V × I = 34 × 11 = 374 W.
5. A circuit component operates at 17 V with a current of 10 A. Use P = VI to calculate the electrical power.
170 W
Electrical power P = V × I = 17 × 10 = 170 W.
6. A circuit component operates at 35 V with a current of 9 A. Use P = VI to calculate the electrical power.
315 W
Electrical power P = V × I = 35 × 9 = 315 W.
7. A circuit component operates at 37 V with a current of 3 A. Use P = VI to calculate the electrical power.
111 W
Electrical power P = V × I = 37 × 3 = 111 W.
8. A circuit component operates at 6 V with a current of 5 A. Use P = VI to calculate the electrical power.
30 W
Electrical power P = V × I = 6 × 5 = 30 W.
9. A circuit component operates at 14 V with a current of 12 A. Use P = VI to calculate the electrical power.
168 W
Electrical power P = V × I = 14 × 12 = 168 W.
10. A circuit component operates at 32 V with a current of 4 A. Use P = VI to calculate the electrical power.
128 W
Electrical power P = V × I = 32 × 4 = 128 W.
11. A circuit component operates at 7 V with a current of 6 A. Use P = VI to calculate the electrical power.
42 W
Electrical power P = V × I = 7 × 6 = 42 W.
12. A circuit component operates at 26 V with a current of 10 A. Use P = VI to calculate the electrical power.
260 W
Electrical power P = V × I = 26 × 10 = 260 W.

12 questions · Seed 55 · 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 36 V with a current of 13 A. Use P = VI to calculate the electrical power.
V = 36 V · I = 13 A
2. A circuit component operates at 50 V with a current of 2 A. Use P = VI to calculate the electrical power.
V = 50 V · I = 2 A
3. A circuit component operates at 40 V with a current of 15 A. Use P = VI to calculate the electrical power.
V = 40 V · I = 15 A
4. A circuit component operates at 34 V with a current of 11 A. Use P = VI to calculate the electrical power.
V = 34 V · I = 11 A
5. A circuit component operates at 17 V with a current of 10 A. Use P = VI to calculate the electrical power.
V = 17 V · I = 10 A
6. A circuit component operates at 35 V with a current of 9 A. Use P = VI to calculate the electrical power.
V = 35 V · I = 9 A
7. A circuit component operates at 37 V with a current of 3 A. Use P = VI to calculate the electrical power.
V = 37 V · I = 3 A
8. A circuit component operates at 6 V with a current of 5 A. Use P = VI to calculate the electrical power.
V = 6 V · I = 5 A
9. A circuit component operates at 14 V with a current of 12 A. Use P = VI to calculate the electrical power.
V = 14 V · I = 12 A
10. A circuit component operates at 32 V with a current of 4 A. Use P = VI to calculate the electrical power.
V = 32 V · I = 4 A
11. A circuit component operates at 7 V with a current of 6 A. Use P = VI to calculate the electrical power.
V = 7 V · I = 6 A
12. A circuit component operates at 26 V with a current of 10 A. Use P = VI to calculate the electrical power.
V = 26 V · I = 10 A

12 questions · Seed 55 · 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 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.
2. A circuit component operates at 50 V with a current of 2 A. Use P = VI to calculate the electrical power.
100 W
Electrical power P = V × I = 50 × 2 = 100 W.
3. A circuit component operates at 40 V with a current of 15 A. Use P = VI to calculate the electrical power.
600 W
Electrical power P = V × I = 40 × 15 = 600 W.
4. A circuit component operates at 34 V with a current of 11 A. Use P = VI to calculate the electrical power.
374 W
Electrical power P = V × I = 34 × 11 = 374 W.
5. A circuit component operates at 17 V with a current of 10 A. Use P = VI to calculate the electrical power.
170 W
Electrical power P = V × I = 17 × 10 = 170 W.
6. A circuit component operates at 35 V with a current of 9 A. Use P = VI to calculate the electrical power.
315 W
Electrical power P = V × I = 35 × 9 = 315 W.
7. A circuit component operates at 37 V with a current of 3 A. Use P = VI to calculate the electrical power.
111 W
Electrical power P = V × I = 37 × 3 = 111 W.
8. A circuit component operates at 6 V with a current of 5 A. Use P = VI to calculate the electrical power.
30 W
Electrical power P = V × I = 6 × 5 = 30 W.
9. A circuit component operates at 14 V with a current of 12 A. Use P = VI to calculate the electrical power.
168 W
Electrical power P = V × I = 14 × 12 = 168 W.
10. A circuit component operates at 32 V with a current of 4 A. Use P = VI to calculate the electrical power.
128 W
Electrical power P = V × I = 32 × 4 = 128 W.
11. A circuit component operates at 7 V with a current of 6 A. Use P = VI to calculate the electrical power.
42 W
Electrical power P = V × I = 7 × 6 = 42 W.
12. A circuit component operates at 26 V with a current of 10 A. Use P = VI to calculate the electrical power.
260 W
Electrical power P = V × I = 26 × 10 = 260 W.

12 questions · Seed 55 · Age guidance, not curriculum certification