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 30 V with a current of 13 A. Use P = VI to calculate the electrical power.
V = 30 V · I = 13 A
2. A circuit component operates at 41 V with a current of 14 A. Use P = VI to calculate the electrical power.
V = 41 V · I = 14 A
3. A circuit component operates at 11 V with a current of 3 A. Use P = VI to calculate the electrical power.
V = 11 V · I = 3 A
4. A circuit component operates at 34 V with a current of 10 A. Use P = VI to calculate the electrical power.
V = 34 V · I = 10 A
5. A circuit component operates at 21 V with a current of 7 A. Use P = VI to calculate the electrical power.
V = 21 V · I = 7 A
6. A circuit component operates at 27 V with a current of 4 A. Use P = VI to calculate the electrical power.
V = 27 V · I = 4 A
7. A circuit component operates at 18 V with a current of 9 A. Use P = VI to calculate the electrical power.
V = 18 V · I = 9 A
8. A circuit component operates at 17 V with a current of 8 A. Use P = VI to calculate the electrical power.
V = 17 V · I = 8 A
9. A circuit component operates at 46 V with a current of 5 A. Use P = VI to calculate the electrical power.
V = 46 V · I = 5 A
10. A circuit component operates at 48 V with a current of 8 A. Use P = VI to calculate the electrical power.
V = 48 V · I = 8 A
11. A circuit component operates at 43 V with a current of 6 A. Use P = VI to calculate the electrical power.
V = 43 V · I = 6 A
12. 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

12 questions · Seed 104730 · 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 30 V with a current of 13 A. Use P = VI to calculate the electrical power.
390 W
Electrical power P = V × I = 30 × 13 = 390 W.
2. A circuit component operates at 41 V with a current of 14 A. Use P = VI to calculate the electrical power.
574 W
Electrical power P = V × I = 41 × 14 = 574 W.
3. A circuit component operates at 11 V with a current of 3 A. Use P = VI to calculate the electrical power.
33 W
Electrical power P = V × I = 11 × 3 = 33 W.
4. A circuit component operates at 34 V with a current of 10 A. Use P = VI to calculate the electrical power.
340 W
Electrical power P = V × I = 34 × 10 = 340 W.
5. A circuit component operates at 21 V with a current of 7 A. Use P = VI to calculate the electrical power.
147 W
Electrical power P = V × I = 21 × 7 = 147 W.
6. A circuit component operates at 27 V with a current of 4 A. Use P = VI to calculate the electrical power.
108 W
Electrical power P = V × I = 27 × 4 = 108 W.
7. A circuit component operates at 18 V with a current of 9 A. Use P = VI to calculate the electrical power.
162 W
Electrical power P = V × I = 18 × 9 = 162 W.
8. A circuit component operates at 17 V with a current of 8 A. Use P = VI to calculate the electrical power.
136 W
Electrical power P = V × I = 17 × 8 = 136 W.
9. A circuit component operates at 46 V with a current of 5 A. Use P = VI to calculate the electrical power.
230 W
Electrical power P = V × I = 46 × 5 = 230 W.
10. A circuit component operates at 48 V with a current of 8 A. Use P = VI to calculate the electrical power.
384 W
Electrical power P = V × I = 48 × 8 = 384 W.
11. A circuit component operates at 43 V with a current of 6 A. Use P = VI to calculate the electrical power.
258 W
Electrical power P = V × I = 43 × 6 = 258 W.
12. 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.

12 questions · Seed 104730 · 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 30 V with a current of 13 A. Use P = VI to calculate the electrical power.
V = 30 V · I = 13 A
2. A circuit component operates at 41 V with a current of 14 A. Use P = VI to calculate the electrical power.
V = 41 V · I = 14 A
3. A circuit component operates at 11 V with a current of 3 A. Use P = VI to calculate the electrical power.
V = 11 V · I = 3 A
4. A circuit component operates at 34 V with a current of 10 A. Use P = VI to calculate the electrical power.
V = 34 V · I = 10 A
5. A circuit component operates at 21 V with a current of 7 A. Use P = VI to calculate the electrical power.
V = 21 V · I = 7 A
6. A circuit component operates at 27 V with a current of 4 A. Use P = VI to calculate the electrical power.
V = 27 V · I = 4 A
7. A circuit component operates at 18 V with a current of 9 A. Use P = VI to calculate the electrical power.
V = 18 V · I = 9 A
8. A circuit component operates at 17 V with a current of 8 A. Use P = VI to calculate the electrical power.
V = 17 V · I = 8 A
9. A circuit component operates at 46 V with a current of 5 A. Use P = VI to calculate the electrical power.
V = 46 V · I = 5 A
10. A circuit component operates at 48 V with a current of 8 A. Use P = VI to calculate the electrical power.
V = 48 V · I = 8 A
11. A circuit component operates at 43 V with a current of 6 A. Use P = VI to calculate the electrical power.
V = 43 V · I = 6 A
12. 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

12 questions · Seed 104730 · 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 30 V with a current of 13 A. Use P = VI to calculate the electrical power.
390 W
Electrical power P = V × I = 30 × 13 = 390 W.
2. A circuit component operates at 41 V with a current of 14 A. Use P = VI to calculate the electrical power.
574 W
Electrical power P = V × I = 41 × 14 = 574 W.
3. A circuit component operates at 11 V with a current of 3 A. Use P = VI to calculate the electrical power.
33 W
Electrical power P = V × I = 11 × 3 = 33 W.
4. A circuit component operates at 34 V with a current of 10 A. Use P = VI to calculate the electrical power.
340 W
Electrical power P = V × I = 34 × 10 = 340 W.
5. A circuit component operates at 21 V with a current of 7 A. Use P = VI to calculate the electrical power.
147 W
Electrical power P = V × I = 21 × 7 = 147 W.
6. A circuit component operates at 27 V with a current of 4 A. Use P = VI to calculate the electrical power.
108 W
Electrical power P = V × I = 27 × 4 = 108 W.
7. A circuit component operates at 18 V with a current of 9 A. Use P = VI to calculate the electrical power.
162 W
Electrical power P = V × I = 18 × 9 = 162 W.
8. A circuit component operates at 17 V with a current of 8 A. Use P = VI to calculate the electrical power.
136 W
Electrical power P = V × I = 17 × 8 = 136 W.
9. A circuit component operates at 46 V with a current of 5 A. Use P = VI to calculate the electrical power.
230 W
Electrical power P = V × I = 46 × 5 = 230 W.
10. A circuit component operates at 48 V with a current of 8 A. Use P = VI to calculate the electrical power.
384 W
Electrical power P = V × I = 48 × 8 = 384 W.
11. A circuit component operates at 43 V with a current of 6 A. Use P = VI to calculate the electrical power.
258 W
Electrical power P = V × I = 43 × 6 = 258 W.
12. 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.

12 questions · Seed 104730 · Age guidance, not curriculum certification