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 1 A and has resistance 3 Ω. Use V = IR to find the voltage.
I = 1 A · R = 3 Ω
2. A resistor carries 4 A and has resistance 12 Ω. Use V = IR to find the voltage.
I = 4 A · R = 12 Ω
3. A resistor carries 3 A and has resistance 20 Ω. Use V = IR to find the voltage.
I = 3 A · R = 20 Ω
4. A resistor carries 4 A and has resistance 24 Ω. Use V = IR to find the voltage.
I = 4 A · R = 24 Ω
5. A resistor carries 1 A and has resistance 24 Ω. Use V = IR to find the voltage.
I = 1 A · R = 24 Ω
6. A resistor carries 9 A and has resistance 18 Ω. Use V = IR to find the voltage.
I = 9 A · R = 18 Ω
7. A resistor carries 12 A and has resistance 17 Ω. Use V = IR to find the voltage.
I = 12 A · R = 17 Ω
8. A resistor carries 12 A and has resistance 44 Ω. Use V = IR to find the voltage.
I = 12 A · R = 44 Ω
9. A resistor carries 2 A and has resistance 29 Ω. Use V = IR to find the voltage.
I = 2 A · R = 29 Ω
10. A resistor carries 11 A and has resistance 22 Ω. Use V = IR to find the voltage.
I = 11 A · R = 22 Ω
11. A resistor carries 6 A and has resistance 49 Ω. Use V = IR to find the voltage.
I = 6 A · R = 49 Ω
12. A resistor carries 11 A and has resistance 44 Ω. Use V = IR to find the voltage.
I = 11 A · R = 44 Ω

12 questions · Seed 104730 · 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 1 A and has resistance 3 Ω. Use V = IR to find the voltage.
3 V
V = I × R = 1 × 3 = 3 V.
2. A resistor carries 4 A and has resistance 12 Ω. Use V = IR to find the voltage.
48 V
V = I × R = 4 × 12 = 48 V.
3. A resistor carries 3 A and has resistance 20 Ω. Use V = IR to find the voltage.
60 V
V = I × R = 3 × 20 = 60 V.
4. A resistor carries 4 A and has resistance 24 Ω. Use V = IR to find the voltage.
96 V
V = I × R = 4 × 24 = 96 V.
5. A resistor carries 1 A and has resistance 24 Ω. Use V = IR to find the voltage.
24 V
V = I × R = 1 × 24 = 24 V.
6. A resistor carries 9 A and has resistance 18 Ω. Use V = IR to find the voltage.
162 V
V = I × R = 9 × 18 = 162 V.
7. A resistor carries 12 A and has resistance 17 Ω. Use V = IR to find the voltage.
204 V
V = I × R = 12 × 17 = 204 V.
8. A resistor carries 12 A and has resistance 44 Ω. Use V = IR to find the voltage.
528 V
V = I × R = 12 × 44 = 528 V.
9. 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.
10. A resistor carries 11 A and has resistance 22 Ω. Use V = IR to find the voltage.
242 V
V = I × R = 11 × 22 = 242 V.
11. A resistor carries 6 A and has resistance 49 Ω. Use V = IR to find the voltage.
294 V
V = I × R = 6 × 49 = 294 V.
12. A resistor carries 11 A and has resistance 44 Ω. Use V = IR to find the voltage.
484 V
V = I × R = 11 × 44 = 484 V.

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

Worksheet StudioPractice pack · Ages 13-15

Take your time. Show your thinking.

1. A resistor carries 1 A and has resistance 3 Ω. Use V = IR to find the voltage.
I = 1 A · R = 3 Ω
2. A resistor carries 4 A and has resistance 12 Ω. Use V = IR to find the voltage.
I = 4 A · R = 12 Ω
3. A resistor carries 3 A and has resistance 20 Ω. Use V = IR to find the voltage.
I = 3 A · R = 20 Ω
4. A resistor carries 4 A and has resistance 24 Ω. Use V = IR to find the voltage.
I = 4 A · R = 24 Ω
5. A resistor carries 1 A and has resistance 24 Ω. Use V = IR to find the voltage.
I = 1 A · R = 24 Ω
6. A resistor carries 9 A and has resistance 18 Ω. Use V = IR to find the voltage.
I = 9 A · R = 18 Ω
7. A resistor carries 12 A and has resistance 17 Ω. Use V = IR to find the voltage.
I = 12 A · R = 17 Ω
8. A resistor carries 12 A and has resistance 44 Ω. Use V = IR to find the voltage.
I = 12 A · R = 44 Ω
9. A resistor carries 2 A and has resistance 29 Ω. Use V = IR to find the voltage.
I = 2 A · R = 29 Ω
10. A resistor carries 11 A and has resistance 22 Ω. Use V = IR to find the voltage.
I = 11 A · R = 22 Ω
11. A resistor carries 6 A and has resistance 49 Ω. Use V = IR to find the voltage.
I = 6 A · R = 49 Ω
12. A resistor carries 11 A and has resistance 44 Ω. Use V = IR to find the voltage.
I = 11 A · R = 44 Ω

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

Worksheet StudioAnswer key · Ages 13-15

Answers and reasoning. Review before teaching.

1. A resistor carries 1 A and has resistance 3 Ω. Use V = IR to find the voltage.
3 V
V = I × R = 1 × 3 = 3 V.
2. A resistor carries 4 A and has resistance 12 Ω. Use V = IR to find the voltage.
48 V
V = I × R = 4 × 12 = 48 V.
3. A resistor carries 3 A and has resistance 20 Ω. Use V = IR to find the voltage.
60 V
V = I × R = 3 × 20 = 60 V.
4. A resistor carries 4 A and has resistance 24 Ω. Use V = IR to find the voltage.
96 V
V = I × R = 4 × 24 = 96 V.
5. A resistor carries 1 A and has resistance 24 Ω. Use V = IR to find the voltage.
24 V
V = I × R = 1 × 24 = 24 V.
6. A resistor carries 9 A and has resistance 18 Ω. Use V = IR to find the voltage.
162 V
V = I × R = 9 × 18 = 162 V.
7. A resistor carries 12 A and has resistance 17 Ω. Use V = IR to find the voltage.
204 V
V = I × R = 12 × 17 = 204 V.
8. A resistor carries 12 A and has resistance 44 Ω. Use V = IR to find the voltage.
528 V
V = I × R = 12 × 44 = 528 V.
9. 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.
10. A resistor carries 11 A and has resistance 22 Ω. Use V = IR to find the voltage.
242 V
V = I × R = 11 × 22 = 242 V.
11. A resistor carries 6 A and has resistance 49 Ω. Use V = IR to find the voltage.
294 V
V = I × R = 6 × 49 = 294 V.
12. A resistor carries 11 A and has resistance 44 Ω. Use V = IR to find the voltage.
484 V
V = I × R = 11 × 44 = 484 V.

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