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 25 V with a current of 8 A. Use P = VI to calculate the electrical power.
V = 25 V · I = 8 A
2. A circuit component operates at 37 V with a current of 11 A. Use P = VI to calculate the electrical power.
V = 37 V · I = 11 A
3. A circuit component operates at 5 V with a current of 12 A. Use P = VI to calculate the electrical power.
V = 5 V · I = 12 A
4. A circuit component operates at 47 V with a current of 5 A. Use P = VI to calculate the electrical power.
V = 47 V · I = 5 A
5. A circuit component operates at 43 V with a current of 7 A. Use P = VI to calculate the electrical power.
V = 43 V · I = 7 A
6. A circuit component operates at 4 V with a current of 14 A. Use P = VI to calculate the electrical power.
V = 4 V · I = 14 A
7. A circuit component operates at 22 V with a current of 8 A. Use P = VI to calculate the electrical power.
V = 22 V · I = 8 A
8. 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
9. A circuit component operates at 19 V with a current of 7 A. Use P = VI to calculate the electrical power.
V = 19 V · I = 7 A
10. A circuit component operates at 20 V with a current of 4 A. Use P = VI to calculate the electrical power.
V = 20 V · I = 4 A
11. A circuit component operates at 19 V with a current of 13 A. Use P = VI to calculate the electrical power.
V = 19 V · I = 13 A
12. A circuit component operates at 16 V with a current of 8 A. Use P = VI to calculate the electrical power.
V = 16 V · I = 8 A

12 questions · Seed 57 · 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 25 V with a current of 8 A. Use P = VI to calculate the electrical power.
200 W
Electrical power P = V × I = 25 × 8 = 200 W.
2. A circuit component operates at 37 V with a current of 11 A. Use P = VI to calculate the electrical power.
407 W
Electrical power P = V × I = 37 × 11 = 407 W.
3. A circuit component operates at 5 V with a current of 12 A. Use P = VI to calculate the electrical power.
60 W
Electrical power P = V × I = 5 × 12 = 60 W.
4. A circuit component operates at 47 V with a current of 5 A. Use P = VI to calculate the electrical power.
235 W
Electrical power P = V × I = 47 × 5 = 235 W.
5. A circuit component operates at 43 V with a current of 7 A. Use P = VI to calculate the electrical power.
301 W
Electrical power P = V × I = 43 × 7 = 301 W.
6. A circuit component operates at 4 V with a current of 14 A. Use P = VI to calculate the electrical power.
56 W
Electrical power P = V × I = 4 × 14 = 56 W.
7. A circuit component operates at 22 V with a current of 8 A. Use P = VI to calculate the electrical power.
176 W
Electrical power P = V × I = 22 × 8 = 176 W.
8. 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.
9. A circuit component operates at 19 V with a current of 7 A. Use P = VI to calculate the electrical power.
133 W
Electrical power P = V × I = 19 × 7 = 133 W.
10. A circuit component operates at 20 V with a current of 4 A. Use P = VI to calculate the electrical power.
80 W
Electrical power P = V × I = 20 × 4 = 80 W.
11. A circuit component operates at 19 V with a current of 13 A. Use P = VI to calculate the electrical power.
247 W
Electrical power P = V × I = 19 × 13 = 247 W.
12. A circuit component operates at 16 V with a current of 8 A. Use P = VI to calculate the electrical power.
128 W
Electrical power P = V × I = 16 × 8 = 128 W.

12 questions · Seed 57 · 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 25 V with a current of 8 A. Use P = VI to calculate the electrical power.
V = 25 V · I = 8 A
2. A circuit component operates at 37 V with a current of 11 A. Use P = VI to calculate the electrical power.
V = 37 V · I = 11 A
3. A circuit component operates at 5 V with a current of 12 A. Use P = VI to calculate the electrical power.
V = 5 V · I = 12 A
4. A circuit component operates at 47 V with a current of 5 A. Use P = VI to calculate the electrical power.
V = 47 V · I = 5 A
5. A circuit component operates at 43 V with a current of 7 A. Use P = VI to calculate the electrical power.
V = 43 V · I = 7 A
6. A circuit component operates at 4 V with a current of 14 A. Use P = VI to calculate the electrical power.
V = 4 V · I = 14 A
7. A circuit component operates at 22 V with a current of 8 A. Use P = VI to calculate the electrical power.
V = 22 V · I = 8 A
8. 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
9. A circuit component operates at 19 V with a current of 7 A. Use P = VI to calculate the electrical power.
V = 19 V · I = 7 A
10. A circuit component operates at 20 V with a current of 4 A. Use P = VI to calculate the electrical power.
V = 20 V · I = 4 A
11. A circuit component operates at 19 V with a current of 13 A. Use P = VI to calculate the electrical power.
V = 19 V · I = 13 A
12. A circuit component operates at 16 V with a current of 8 A. Use P = VI to calculate the electrical power.
V = 16 V · I = 8 A

12 questions · Seed 57 · 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 25 V with a current of 8 A. Use P = VI to calculate the electrical power.
200 W
Electrical power P = V × I = 25 × 8 = 200 W.
2. A circuit component operates at 37 V with a current of 11 A. Use P = VI to calculate the electrical power.
407 W
Electrical power P = V × I = 37 × 11 = 407 W.
3. A circuit component operates at 5 V with a current of 12 A. Use P = VI to calculate the electrical power.
60 W
Electrical power P = V × I = 5 × 12 = 60 W.
4. A circuit component operates at 47 V with a current of 5 A. Use P = VI to calculate the electrical power.
235 W
Electrical power P = V × I = 47 × 5 = 235 W.
5. A circuit component operates at 43 V with a current of 7 A. Use P = VI to calculate the electrical power.
301 W
Electrical power P = V × I = 43 × 7 = 301 W.
6. A circuit component operates at 4 V with a current of 14 A. Use P = VI to calculate the electrical power.
56 W
Electrical power P = V × I = 4 × 14 = 56 W.
7. A circuit component operates at 22 V with a current of 8 A. Use P = VI to calculate the electrical power.
176 W
Electrical power P = V × I = 22 × 8 = 176 W.
8. 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.
9. A circuit component operates at 19 V with a current of 7 A. Use P = VI to calculate the electrical power.
133 W
Electrical power P = V × I = 19 × 7 = 133 W.
10. A circuit component operates at 20 V with a current of 4 A. Use P = VI to calculate the electrical power.
80 W
Electrical power P = V × I = 20 × 4 = 80 W.
11. A circuit component operates at 19 V with a current of 13 A. Use P = VI to calculate the electrical power.
247 W
Electrical power P = V × I = 19 × 13 = 247 W.
12. A circuit component operates at 16 V with a current of 8 A. Use P = VI to calculate the electrical power.
128 W
Electrical power P = V × I = 16 × 8 = 128 W.

12 questions · Seed 57 · Age guidance, not curriculum certification