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.

New variation Try interactive challenge Browse templates

Age band:Ages 13-15 Ages 16-18

Choose “Save as PDF” to keep a copy. Use your browser’s paper setting for A4 or Letter.

Worksheet StudioPractice pack · Ages 13-15

Electrical power (P = VI)

Take your time. Show your thinking.

1. A circuit component operates at 16 V with a current of 13 A. Use P = VI to calculate the electrical power.
V = 16 V · I = 13 A
2. A circuit component operates at 48 V with a current of 9 A. Use P = VI to calculate the electrical power.
V = 48 V · I = 9 A
3. A circuit component operates at 13 V with a current of 13 A. Use P = VI to calculate the electrical power.
V = 13 V · I = 13 A
4. A circuit component operates at 17 V with a current of 1 A. Use P = VI to calculate the electrical power.
V = 17 V · I = 1 A
5. A circuit component operates at 13 V with a current of 1 A. Use P = VI to calculate the electrical power.
V = 13 V · I = 1 A
6. A circuit component operates at 3 V with a current of 8 A. Use P = VI to calculate the electrical power.
V = 3 V · I = 8 A
7. A circuit component operates at 8 V with a current of 5 A. Use P = VI to calculate the electrical power.
V = 8 V · I = 5 A
8. A circuit component operates at 47 V with a current of 3 A. Use P = VI to calculate the electrical power.
V = 47 V · I = 3 A
9. A circuit component operates at 10 V with a current of 3 A. Use P = VI to calculate the electrical power.
V = 10 V · I = 3 A
10. 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
11. A circuit component operates at 43 V with a current of 1 A. Use P = VI to calculate the electrical power.
V = 43 V · I = 1 A
12. A circuit component operates at 33 V with a current of 6 A. Use P = VI to calculate the electrical power.
V = 33 V · I = 6 A

12 questions · Seed 50 · 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 16 V with a current of 13 A. Use P = VI to calculate the electrical power.
208 W
Electrical power P = V × I = 16 × 13 = 208 W.
2. A circuit component operates at 48 V with a current of 9 A. Use P = VI to calculate the electrical power.
432 W
Electrical power P = V × I = 48 × 9 = 432 W.
3. A circuit component operates at 13 V with a current of 13 A. Use P = VI to calculate the electrical power.
169 W
Electrical power P = V × I = 13 × 13 = 169 W.
4. A circuit component operates at 17 V with a current of 1 A. Use P = VI to calculate the electrical power.
17 W
Electrical power P = V × I = 17 × 1 = 17 W.
5. A circuit component operates at 13 V with a current of 1 A. Use P = VI to calculate the electrical power.
13 W
Electrical power P = V × I = 13 × 1 = 13 W.
6. A circuit component operates at 3 V with a current of 8 A. Use P = VI to calculate the electrical power.
24 W
Electrical power P = V × I = 3 × 8 = 24 W.
7. A circuit component operates at 8 V with a current of 5 A. Use P = VI to calculate the electrical power.
40 W
Electrical power P = V × I = 8 × 5 = 40 W.
8. A circuit component operates at 47 V with a current of 3 A. Use P = VI to calculate the electrical power.
141 W
Electrical power P = V × I = 47 × 3 = 141 W.
9. A circuit component operates at 10 V with a current of 3 A. Use P = VI to calculate the electrical power.
30 W
Electrical power P = V × I = 10 × 3 = 30 W.
10. 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.
11. A circuit component operates at 43 V with a current of 1 A. Use P = VI to calculate the electrical power.
43 W
Electrical power P = V × I = 43 × 1 = 43 W.
12. A circuit component operates at 33 V with a current of 6 A. Use P = VI to calculate the electrical power.
198 W
Electrical power P = V × I = 33 × 6 = 198 W.

12 questions · Seed 50 · 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 16 V with a current of 13 A. Use P = VI to calculate the electrical power.
V = 16 V · I = 13 A
2. A circuit component operates at 48 V with a current of 9 A. Use P = VI to calculate the electrical power.
V = 48 V · I = 9 A
3. A circuit component operates at 13 V with a current of 13 A. Use P = VI to calculate the electrical power.
V = 13 V · I = 13 A
4. A circuit component operates at 17 V with a current of 1 A. Use P = VI to calculate the electrical power.
V = 17 V · I = 1 A
5. A circuit component operates at 13 V with a current of 1 A. Use P = VI to calculate the electrical power.
V = 13 V · I = 1 A
6. A circuit component operates at 3 V with a current of 8 A. Use P = VI to calculate the electrical power.
V = 3 V · I = 8 A
7. A circuit component operates at 8 V with a current of 5 A. Use P = VI to calculate the electrical power.
V = 8 V · I = 5 A
8. A circuit component operates at 47 V with a current of 3 A. Use P = VI to calculate the electrical power.
V = 47 V · I = 3 A
9. A circuit component operates at 10 V with a current of 3 A. Use P = VI to calculate the electrical power.
V = 10 V · I = 3 A
10. 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
11. A circuit component operates at 43 V with a current of 1 A. Use P = VI to calculate the electrical power.
V = 43 V · I = 1 A
12. A circuit component operates at 33 V with a current of 6 A. Use P = VI to calculate the electrical power.
V = 33 V · I = 6 A

12 questions · Seed 50 · 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 16 V with a current of 13 A. Use P = VI to calculate the electrical power.
208 W
Electrical power P = V × I = 16 × 13 = 208 W.
2. A circuit component operates at 48 V with a current of 9 A. Use P = VI to calculate the electrical power.
432 W
Electrical power P = V × I = 48 × 9 = 432 W.
3. A circuit component operates at 13 V with a current of 13 A. Use P = VI to calculate the electrical power.
169 W
Electrical power P = V × I = 13 × 13 = 169 W.
4. A circuit component operates at 17 V with a current of 1 A. Use P = VI to calculate the electrical power.
17 W
Electrical power P = V × I = 17 × 1 = 17 W.
5. A circuit component operates at 13 V with a current of 1 A. Use P = VI to calculate the electrical power.
13 W
Electrical power P = V × I = 13 × 1 = 13 W.
6. A circuit component operates at 3 V with a current of 8 A. Use P = VI to calculate the electrical power.
24 W
Electrical power P = V × I = 3 × 8 = 24 W.
7. A circuit component operates at 8 V with a current of 5 A. Use P = VI to calculate the electrical power.
40 W
Electrical power P = V × I = 8 × 5 = 40 W.
8. A circuit component operates at 47 V with a current of 3 A. Use P = VI to calculate the electrical power.
141 W
Electrical power P = V × I = 47 × 3 = 141 W.
9. A circuit component operates at 10 V with a current of 3 A. Use P = VI to calculate the electrical power.
30 W
Electrical power P = V × I = 10 × 3 = 30 W.
10. 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.
11. A circuit component operates at 43 V with a current of 1 A. Use P = VI to calculate the electrical power.
43 W
Electrical power P = V × I = 43 × 1 = 43 W.
12. A circuit component operates at 33 V with a current of 6 A. Use P = VI to calculate the electrical power.
198 W
Electrical power P = V × I = 33 × 6 = 198 W.

12 questions · Seed 50 · Age guidance, not curriculum certification