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 30 V with a current of 10 A. Use P = VI to calculate the electrical power.
V = 30 V · I = 10 A
2. A circuit component operates at 22 V with a current of 11 A. Use P = VI to calculate the electrical power.
V = 22 V · I = 11 A
3. 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
4. A circuit component operates at 30 V with a current of 11 A. Use P = VI to calculate the electrical power.
V = 30 V · I = 11 A
5. A circuit component operates at 28 V with a current of 12 A. Use P = VI to calculate the electrical power.
V = 28 V · I = 12 A
6. A circuit component operates at 12 V with a current of 10 A. Use P = VI to calculate the electrical power.
V = 12 V · I = 10 A
7. A circuit component operates at 29 V with a current of 13 A. Use P = VI to calculate the electrical power.
V = 29 V · I = 13 A
8. A circuit component operates at 9 V with a current of 7 A. Use P = VI to calculate the electrical power.
V = 9 V · I = 7 A
9. A circuit component operates at 47 V with a current of 12 A. Use P = VI to calculate the electrical power.
V = 47 V · I = 12 A
10. A circuit component operates at 10 V with a current of 2 A. Use P = VI to calculate the electrical power.
V = 10 V · I = 2 A
11. A circuit component operates at 9 V with a current of 10 A. Use P = VI to calculate the electrical power.
V = 9 V · I = 10 A
12. A circuit component operates at 30 V with a current of 14 A. Use P = VI to calculate the electrical power.
V = 30 V · I = 14 A

12 questions · Seed 104735 · 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 30 V with a current of 10 A. Use P = VI to calculate the electrical power.
300 W
Electrical power P = V × I = 30 × 10 = 300 W.
2. A circuit component operates at 22 V with a current of 11 A. Use P = VI to calculate the electrical power.
242 W
Electrical power P = V × I = 22 × 11 = 242 W.
3. 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.
4. A circuit component operates at 30 V with a current of 11 A. Use P = VI to calculate the electrical power.
330 W
Electrical power P = V × I = 30 × 11 = 330 W.
5. A circuit component operates at 28 V with a current of 12 A. Use P = VI to calculate the electrical power.
336 W
Electrical power P = V × I = 28 × 12 = 336 W.
6. A circuit component operates at 12 V with a current of 10 A. Use P = VI to calculate the electrical power.
120 W
Electrical power P = V × I = 12 × 10 = 120 W.
7. A circuit component operates at 29 V with a current of 13 A. Use P = VI to calculate the electrical power.
377 W
Electrical power P = V × I = 29 × 13 = 377 W.
8. A circuit component operates at 9 V with a current of 7 A. Use P = VI to calculate the electrical power.
63 W
Electrical power P = V × I = 9 × 7 = 63 W.
9. A circuit component operates at 47 V with a current of 12 A. Use P = VI to calculate the electrical power.
564 W
Electrical power P = V × I = 47 × 12 = 564 W.
10. A circuit component operates at 10 V with a current of 2 A. Use P = VI to calculate the electrical power.
20 W
Electrical power P = V × I = 10 × 2 = 20 W.
11. A circuit component operates at 9 V with a current of 10 A. Use P = VI to calculate the electrical power.
90 W
Electrical power P = V × I = 9 × 10 = 90 W.
12. A circuit component operates at 30 V with a current of 14 A. Use P = VI to calculate the electrical power.
420 W
Electrical power P = V × I = 30 × 14 = 420 W.

12 questions · Seed 104735 · 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 30 V with a current of 10 A. Use P = VI to calculate the electrical power.
V = 30 V · I = 10 A
2. A circuit component operates at 22 V with a current of 11 A. Use P = VI to calculate the electrical power.
V = 22 V · I = 11 A
3. 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
4. A circuit component operates at 30 V with a current of 11 A. Use P = VI to calculate the electrical power.
V = 30 V · I = 11 A
5. A circuit component operates at 28 V with a current of 12 A. Use P = VI to calculate the electrical power.
V = 28 V · I = 12 A
6. A circuit component operates at 12 V with a current of 10 A. Use P = VI to calculate the electrical power.
V = 12 V · I = 10 A
7. A circuit component operates at 29 V with a current of 13 A. Use P = VI to calculate the electrical power.
V = 29 V · I = 13 A
8. A circuit component operates at 9 V with a current of 7 A. Use P = VI to calculate the electrical power.
V = 9 V · I = 7 A
9. A circuit component operates at 47 V with a current of 12 A. Use P = VI to calculate the electrical power.
V = 47 V · I = 12 A
10. A circuit component operates at 10 V with a current of 2 A. Use P = VI to calculate the electrical power.
V = 10 V · I = 2 A
11. A circuit component operates at 9 V with a current of 10 A. Use P = VI to calculate the electrical power.
V = 9 V · I = 10 A
12. A circuit component operates at 30 V with a current of 14 A. Use P = VI to calculate the electrical power.
V = 30 V · I = 14 A

12 questions · Seed 104735 · 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 30 V with a current of 10 A. Use P = VI to calculate the electrical power.
300 W
Electrical power P = V × I = 30 × 10 = 300 W.
2. A circuit component operates at 22 V with a current of 11 A. Use P = VI to calculate the electrical power.
242 W
Electrical power P = V × I = 22 × 11 = 242 W.
3. 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.
4. A circuit component operates at 30 V with a current of 11 A. Use P = VI to calculate the electrical power.
330 W
Electrical power P = V × I = 30 × 11 = 330 W.
5. A circuit component operates at 28 V with a current of 12 A. Use P = VI to calculate the electrical power.
336 W
Electrical power P = V × I = 28 × 12 = 336 W.
6. A circuit component operates at 12 V with a current of 10 A. Use P = VI to calculate the electrical power.
120 W
Electrical power P = V × I = 12 × 10 = 120 W.
7. A circuit component operates at 29 V with a current of 13 A. Use P = VI to calculate the electrical power.
377 W
Electrical power P = V × I = 29 × 13 = 377 W.
8. A circuit component operates at 9 V with a current of 7 A. Use P = VI to calculate the electrical power.
63 W
Electrical power P = V × I = 9 × 7 = 63 W.
9. A circuit component operates at 47 V with a current of 12 A. Use P = VI to calculate the electrical power.
564 W
Electrical power P = V × I = 47 × 12 = 564 W.
10. A circuit component operates at 10 V with a current of 2 A. Use P = VI to calculate the electrical power.
20 W
Electrical power P = V × I = 10 × 2 = 20 W.
11. A circuit component operates at 9 V with a current of 10 A. Use P = VI to calculate the electrical power.
90 W
Electrical power P = V × I = 9 × 10 = 90 W.
12. A circuit component operates at 30 V with a current of 14 A. Use P = VI to calculate the electrical power.
420 W
Electrical power P = V × I = 30 × 14 = 420 W.

12 questions · Seed 104735 · Age guidance, not curriculum certification