ScienceAges 13-15

Ohm’s law

Use V = IR to calculate voltage from current and resistance in a simple circuit. Review suitability for your learners before teaching.

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Worksheet StudioPractice pack · Ages 13-15

Take your time. Show your thinking.

1. A resistor carries 11 A and has resistance 17 Ω. Use V = IR to find the voltage.
I = 11 A · R = 17 Ω
2. A resistor carries 3 A and has resistance 5 Ω. Use V = IR to find the voltage.
I = 3 A · R = 5 Ω
3. A resistor carries 9 A and has resistance 42 Ω. Use V = IR to find the voltage.
I = 9 A · R = 42 Ω
4. A resistor carries 10 A and has resistance 47 Ω. Use V = IR to find the voltage.
I = 10 A · R = 47 Ω
5. A resistor carries 7 A and has resistance 28 Ω. Use V = IR to find the voltage.
I = 7 A · R = 28 Ω
6. A resistor carries 5 A and has resistance 26 Ω. Use V = IR to find the voltage.
I = 5 A · R = 26 Ω
7. A resistor carries 2 A and has resistance 47 Ω. Use V = IR to find the voltage.
I = 2 A · R = 47 Ω
8. A resistor carries 4 A and has resistance 16 Ω. Use V = IR to find the voltage.
I = 4 A · R = 16 Ω
9. A resistor carries 2 A and has resistance 18 Ω. Use V = IR to find the voltage.
I = 2 A · R = 18 Ω
10. A resistor carries 2 A and has resistance 29 Ω. Use V = IR to find the voltage.
I = 2 A · R = 29 Ω
11. A resistor carries 3 A and has resistance 26 Ω. Use V = IR to find the voltage.
I = 3 A · R = 26 Ω
12. A resistor carries 11 A and has resistance 26 Ω. Use V = IR to find the voltage.
I = 11 A · R = 26 Ω

12 questions · Seed 55 · Age guidance, not curriculum certification

View the answer key

Worksheet StudioAnswer key · Ages 13-15

Answers and reasoning. Review before teaching.

1. A resistor carries 11 A and has resistance 17 Ω. Use V = IR to find the voltage.
187 V
V = I × R = 11 × 17 = 187 V.
2. A resistor carries 3 A and has resistance 5 Ω. Use V = IR to find the voltage.
15 V
V = I × R = 3 × 5 = 15 V.
3. A resistor carries 9 A and has resistance 42 Ω. Use V = IR to find the voltage.
378 V
V = I × R = 9 × 42 = 378 V.
4. A resistor carries 10 A and has resistance 47 Ω. Use V = IR to find the voltage.
470 V
V = I × R = 10 × 47 = 470 V.
5. A resistor carries 7 A and has resistance 28 Ω. Use V = IR to find the voltage.
196 V
V = I × R = 7 × 28 = 196 V.
6. A resistor carries 5 A and has resistance 26 Ω. Use V = IR to find the voltage.
130 V
V = I × R = 5 × 26 = 130 V.
7. A resistor carries 2 A and has resistance 47 Ω. Use V = IR to find the voltage.
94 V
V = I × R = 2 × 47 = 94 V.
8. A resistor carries 4 A and has resistance 16 Ω. Use V = IR to find the voltage.
64 V
V = I × R = 4 × 16 = 64 V.
9. A resistor carries 2 A and has resistance 18 Ω. Use V = IR to find the voltage.
36 V
V = I × R = 2 × 18 = 36 V.
10. A resistor carries 2 A and has resistance 29 Ω. Use V = IR to find the voltage.
58 V
V = I × R = 2 × 29 = 58 V.
11. A resistor carries 3 A and has resistance 26 Ω. Use V = IR to find the voltage.
78 V
V = I × R = 3 × 26 = 78 V.
12. A resistor carries 11 A and has resistance 26 Ω. Use V = IR to find the voltage.
286 V
V = I × R = 11 × 26 = 286 V.

12 questions · Seed 55 · Age guidance, not curriculum certification

Worksheet StudioPractice pack · Ages 13-15

Take your time. Show your thinking.

1. A resistor carries 11 A and has resistance 17 Ω. Use V = IR to find the voltage.
I = 11 A · R = 17 Ω
2. A resistor carries 3 A and has resistance 5 Ω. Use V = IR to find the voltage.
I = 3 A · R = 5 Ω
3. A resistor carries 9 A and has resistance 42 Ω. Use V = IR to find the voltage.
I = 9 A · R = 42 Ω
4. A resistor carries 10 A and has resistance 47 Ω. Use V = IR to find the voltage.
I = 10 A · R = 47 Ω
5. A resistor carries 7 A and has resistance 28 Ω. Use V = IR to find the voltage.
I = 7 A · R = 28 Ω
6. A resistor carries 5 A and has resistance 26 Ω. Use V = IR to find the voltage.
I = 5 A · R = 26 Ω
7. A resistor carries 2 A and has resistance 47 Ω. Use V = IR to find the voltage.
I = 2 A · R = 47 Ω
8. A resistor carries 4 A and has resistance 16 Ω. Use V = IR to find the voltage.
I = 4 A · R = 16 Ω
9. A resistor carries 2 A and has resistance 18 Ω. Use V = IR to find the voltage.
I = 2 A · R = 18 Ω
10. A resistor carries 2 A and has resistance 29 Ω. Use V = IR to find the voltage.
I = 2 A · R = 29 Ω
11. A resistor carries 3 A and has resistance 26 Ω. Use V = IR to find the voltage.
I = 3 A · R = 26 Ω
12. A resistor carries 11 A and has resistance 26 Ω. Use V = IR to find the voltage.
I = 11 A · R = 26 Ω

12 questions · Seed 55 · Age guidance, not curriculum certification

Worksheet StudioAnswer key · Ages 13-15

Answers and reasoning. Review before teaching.

1. A resistor carries 11 A and has resistance 17 Ω. Use V = IR to find the voltage.
187 V
V = I × R = 11 × 17 = 187 V.
2. A resistor carries 3 A and has resistance 5 Ω. Use V = IR to find the voltage.
15 V
V = I × R = 3 × 5 = 15 V.
3. A resistor carries 9 A and has resistance 42 Ω. Use V = IR to find the voltage.
378 V
V = I × R = 9 × 42 = 378 V.
4. A resistor carries 10 A and has resistance 47 Ω. Use V = IR to find the voltage.
470 V
V = I × R = 10 × 47 = 470 V.
5. A resistor carries 7 A and has resistance 28 Ω. Use V = IR to find the voltage.
196 V
V = I × R = 7 × 28 = 196 V.
6. A resistor carries 5 A and has resistance 26 Ω. Use V = IR to find the voltage.
130 V
V = I × R = 5 × 26 = 130 V.
7. A resistor carries 2 A and has resistance 47 Ω. Use V = IR to find the voltage.
94 V
V = I × R = 2 × 47 = 94 V.
8. A resistor carries 4 A and has resistance 16 Ω. Use V = IR to find the voltage.
64 V
V = I × R = 4 × 16 = 64 V.
9. A resistor carries 2 A and has resistance 18 Ω. Use V = IR to find the voltage.
36 V
V = I × R = 2 × 18 = 36 V.
10. A resistor carries 2 A and has resistance 29 Ω. Use V = IR to find the voltage.
58 V
V = I × R = 2 × 29 = 58 V.
11. A resistor carries 3 A and has resistance 26 Ω. Use V = IR to find the voltage.
78 V
V = I × R = 3 × 26 = 78 V.
12. A resistor carries 11 A and has resistance 26 Ω. Use V = IR to find the voltage.
286 V
V = I × R = 11 × 26 = 286 V.

12 questions · Seed 55 · Age guidance, not curriculum certification