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 1 A. Use P = VI to calculate the electrical power.
V = 12 V · I = 1 A
2. A circuit component operates at 25 V with a current of 6 A. Use P = VI to calculate the electrical power.
V = 25 V · I = 6 A
3. A circuit component operates at 4 V with a current of 6 A. Use P = VI to calculate the electrical power.
V = 4 V · I = 6 A
4. A circuit component operates at 25 V with a current of 4 A. Use P = VI to calculate the electrical power.
V = 25 V · I = 4 A
5. A circuit component operates at 16 V with a current of 3 A. Use P = VI to calculate the electrical power.
V = 16 V · I = 3 A
6. A circuit component operates at 22 V with a current of 1 A. Use P = VI to calculate the electrical power.
V = 22 V · I = 1 A
7. A circuit component operates at 7 V with a current of 10 A. Use P = VI to calculate the electrical power.
V = 7 V · I = 10 A
8. A circuit component operates at 14 V with a current of 2 A. Use P = VI to calculate the electrical power.
V = 14 V · I = 2 A
9. A circuit component operates at 34 V with a current of 5 A. Use P = VI to calculate the electrical power.
V = 34 V · I = 5 A
10. A circuit component operates at 46 V with a current of 11 A. Use P = VI to calculate the electrical power.
V = 46 V · I = 11 A
11. A circuit component operates at 21 V with a current of 11 A. Use P = VI to calculate the electrical power.
V = 21 V · I = 11 A
12. A circuit component operates at 13 V with a current of 10 A. Use P = VI to calculate the electrical power.
V = 13 V · I = 10 A

12 questions · Seed 44 · 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 1 A. Use P = VI to calculate the electrical power.
12 W
Electrical power P = V × I = 12 × 1 = 12 W.
2. A circuit component operates at 25 V with a current of 6 A. Use P = VI to calculate the electrical power.
150 W
Electrical power P = V × I = 25 × 6 = 150 W.
3. A circuit component operates at 4 V with a current of 6 A. Use P = VI to calculate the electrical power.
24 W
Electrical power P = V × I = 4 × 6 = 24 W.
4. A circuit component operates at 25 V with a current of 4 A. Use P = VI to calculate the electrical power.
100 W
Electrical power P = V × I = 25 × 4 = 100 W.
5. A circuit component operates at 16 V with a current of 3 A. Use P = VI to calculate the electrical power.
48 W
Electrical power P = V × I = 16 × 3 = 48 W.
6. A circuit component operates at 22 V with a current of 1 A. Use P = VI to calculate the electrical power.
22 W
Electrical power P = V × I = 22 × 1 = 22 W.
7. A circuit component operates at 7 V with a current of 10 A. Use P = VI to calculate the electrical power.
70 W
Electrical power P = V × I = 7 × 10 = 70 W.
8. A circuit component operates at 14 V with a current of 2 A. Use P = VI to calculate the electrical power.
28 W
Electrical power P = V × I = 14 × 2 = 28 W.
9. A circuit component operates at 34 V with a current of 5 A. Use P = VI to calculate the electrical power.
170 W
Electrical power P = V × I = 34 × 5 = 170 W.
10. A circuit component operates at 46 V with a current of 11 A. Use P = VI to calculate the electrical power.
506 W
Electrical power P = V × I = 46 × 11 = 506 W.
11. A circuit component operates at 21 V with a current of 11 A. Use P = VI to calculate the electrical power.
231 W
Electrical power P = V × I = 21 × 11 = 231 W.
12. A circuit component operates at 13 V with a current of 10 A. Use P = VI to calculate the electrical power.
130 W
Electrical power P = V × I = 13 × 10 = 130 W.

12 questions · Seed 44 · 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 1 A. Use P = VI to calculate the electrical power.
V = 12 V · I = 1 A
2. A circuit component operates at 25 V with a current of 6 A. Use P = VI to calculate the electrical power.
V = 25 V · I = 6 A
3. A circuit component operates at 4 V with a current of 6 A. Use P = VI to calculate the electrical power.
V = 4 V · I = 6 A
4. A circuit component operates at 25 V with a current of 4 A. Use P = VI to calculate the electrical power.
V = 25 V · I = 4 A
5. A circuit component operates at 16 V with a current of 3 A. Use P = VI to calculate the electrical power.
V = 16 V · I = 3 A
6. A circuit component operates at 22 V with a current of 1 A. Use P = VI to calculate the electrical power.
V = 22 V · I = 1 A
7. A circuit component operates at 7 V with a current of 10 A. Use P = VI to calculate the electrical power.
V = 7 V · I = 10 A
8. A circuit component operates at 14 V with a current of 2 A. Use P = VI to calculate the electrical power.
V = 14 V · I = 2 A
9. A circuit component operates at 34 V with a current of 5 A. Use P = VI to calculate the electrical power.
V = 34 V · I = 5 A
10. A circuit component operates at 46 V with a current of 11 A. Use P = VI to calculate the electrical power.
V = 46 V · I = 11 A
11. A circuit component operates at 21 V with a current of 11 A. Use P = VI to calculate the electrical power.
V = 21 V · I = 11 A
12. A circuit component operates at 13 V with a current of 10 A. Use P = VI to calculate the electrical power.
V = 13 V · I = 10 A

12 questions · Seed 44 · 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 1 A. Use P = VI to calculate the electrical power.
12 W
Electrical power P = V × I = 12 × 1 = 12 W.
2. A circuit component operates at 25 V with a current of 6 A. Use P = VI to calculate the electrical power.
150 W
Electrical power P = V × I = 25 × 6 = 150 W.
3. A circuit component operates at 4 V with a current of 6 A. Use P = VI to calculate the electrical power.
24 W
Electrical power P = V × I = 4 × 6 = 24 W.
4. A circuit component operates at 25 V with a current of 4 A. Use P = VI to calculate the electrical power.
100 W
Electrical power P = V × I = 25 × 4 = 100 W.
5. A circuit component operates at 16 V with a current of 3 A. Use P = VI to calculate the electrical power.
48 W
Electrical power P = V × I = 16 × 3 = 48 W.
6. A circuit component operates at 22 V with a current of 1 A. Use P = VI to calculate the electrical power.
22 W
Electrical power P = V × I = 22 × 1 = 22 W.
7. A circuit component operates at 7 V with a current of 10 A. Use P = VI to calculate the electrical power.
70 W
Electrical power P = V × I = 7 × 10 = 70 W.
8. A circuit component operates at 14 V with a current of 2 A. Use P = VI to calculate the electrical power.
28 W
Electrical power P = V × I = 14 × 2 = 28 W.
9. A circuit component operates at 34 V with a current of 5 A. Use P = VI to calculate the electrical power.
170 W
Electrical power P = V × I = 34 × 5 = 170 W.
10. A circuit component operates at 46 V with a current of 11 A. Use P = VI to calculate the electrical power.
506 W
Electrical power P = V × I = 46 × 11 = 506 W.
11. A circuit component operates at 21 V with a current of 11 A. Use P = VI to calculate the electrical power.
231 W
Electrical power P = V × I = 21 × 11 = 231 W.
12. A circuit component operates at 13 V with a current of 10 A. Use P = VI to calculate the electrical power.
130 W
Electrical power P = V × I = 13 × 10 = 130 W.

12 questions · Seed 44 · Age guidance, not curriculum certification