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 40 Ω. Use V = IR to find the voltage.
I = 1 A · R = 40 Ω
2. A resistor carries 1 A and has resistance 12 Ω. Use V = IR to find the voltage.
I = 1 A · R = 12 Ω
3. A resistor carries 11 A and has resistance 22 Ω. Use V = IR to find the voltage.
I = 11 A · R = 22 Ω
4. A resistor carries 7 A and has resistance 43 Ω. Use V = IR to find the voltage.
I = 7 A · R = 43 Ω
5. A resistor carries 8 A and has resistance 6 Ω. Use V = IR to find the voltage.
I = 8 A · R = 6 Ω
6. A resistor carries 9 A and has resistance 23 Ω. Use V = IR to find the voltage.
I = 9 A · R = 23 Ω
7. A resistor carries 1 A and has resistance 17 Ω. Use V = IR to find the voltage.
I = 1 A · R = 17 Ω
8. A resistor carries 7 A and has resistance 29 Ω. Use V = IR to find the voltage.
I = 7 A · R = 29 Ω
9. A resistor carries 8 A and has resistance 49 Ω. Use V = IR to find the voltage.
I = 8 A · R = 49 Ω
10. A resistor carries 6 A and has resistance 39 Ω. Use V = IR to find the voltage.
I = 6 A · R = 39 Ω
11. A resistor carries 6 A and has resistance 41 Ω. Use V = IR to find the voltage.
I = 6 A · R = 41 Ω
12. A resistor carries 5 A and has resistance 28 Ω. Use V = IR to find the voltage.
I = 5 A · R = 28 Ω

12 questions · Seed 47 · 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 40 Ω. Use V = IR to find the voltage.
40 V
V = I × R = 1 × 40 = 40 V.
2. A resistor carries 1 A and has resistance 12 Ω. Use V = IR to find the voltage.
12 V
V = I × R = 1 × 12 = 12 V.
3. 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.
4. A resistor carries 7 A and has resistance 43 Ω. Use V = IR to find the voltage.
301 V
V = I × R = 7 × 43 = 301 V.
5. A resistor carries 8 A and has resistance 6 Ω. Use V = IR to find the voltage.
48 V
V = I × R = 8 × 6 = 48 V.
6. A resistor carries 9 A and has resistance 23 Ω. Use V = IR to find the voltage.
207 V
V = I × R = 9 × 23 = 207 V.
7. A resistor carries 1 A and has resistance 17 Ω. Use V = IR to find the voltage.
17 V
V = I × R = 1 × 17 = 17 V.
8. A resistor carries 7 A and has resistance 29 Ω. Use V = IR to find the voltage.
203 V
V = I × R = 7 × 29 = 203 V.
9. A resistor carries 8 A and has resistance 49 Ω. Use V = IR to find the voltage.
392 V
V = I × R = 8 × 49 = 392 V.
10. A resistor carries 6 A and has resistance 39 Ω. Use V = IR to find the voltage.
234 V
V = I × R = 6 × 39 = 234 V.
11. A resistor carries 6 A and has resistance 41 Ω. Use V = IR to find the voltage.
246 V
V = I × R = 6 × 41 = 246 V.
12. A resistor carries 5 A and has resistance 28 Ω. Use V = IR to find the voltage.
140 V
V = I × R = 5 × 28 = 140 V.

12 questions · Seed 47 · 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 40 Ω. Use V = IR to find the voltage.
I = 1 A · R = 40 Ω
2. A resistor carries 1 A and has resistance 12 Ω. Use V = IR to find the voltage.
I = 1 A · R = 12 Ω
3. A resistor carries 11 A and has resistance 22 Ω. Use V = IR to find the voltage.
I = 11 A · R = 22 Ω
4. A resistor carries 7 A and has resistance 43 Ω. Use V = IR to find the voltage.
I = 7 A · R = 43 Ω
5. A resistor carries 8 A and has resistance 6 Ω. Use V = IR to find the voltage.
I = 8 A · R = 6 Ω
6. A resistor carries 9 A and has resistance 23 Ω. Use V = IR to find the voltage.
I = 9 A · R = 23 Ω
7. A resistor carries 1 A and has resistance 17 Ω. Use V = IR to find the voltage.
I = 1 A · R = 17 Ω
8. A resistor carries 7 A and has resistance 29 Ω. Use V = IR to find the voltage.
I = 7 A · R = 29 Ω
9. A resistor carries 8 A and has resistance 49 Ω. Use V = IR to find the voltage.
I = 8 A · R = 49 Ω
10. A resistor carries 6 A and has resistance 39 Ω. Use V = IR to find the voltage.
I = 6 A · R = 39 Ω
11. A resistor carries 6 A and has resistance 41 Ω. Use V = IR to find the voltage.
I = 6 A · R = 41 Ω
12. A resistor carries 5 A and has resistance 28 Ω. Use V = IR to find the voltage.
I = 5 A · R = 28 Ω

12 questions · Seed 47 · 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 40 Ω. Use V = IR to find the voltage.
40 V
V = I × R = 1 × 40 = 40 V.
2. A resistor carries 1 A and has resistance 12 Ω. Use V = IR to find the voltage.
12 V
V = I × R = 1 × 12 = 12 V.
3. 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.
4. A resistor carries 7 A and has resistance 43 Ω. Use V = IR to find the voltage.
301 V
V = I × R = 7 × 43 = 301 V.
5. A resistor carries 8 A and has resistance 6 Ω. Use V = IR to find the voltage.
48 V
V = I × R = 8 × 6 = 48 V.
6. A resistor carries 9 A and has resistance 23 Ω. Use V = IR to find the voltage.
207 V
V = I × R = 9 × 23 = 207 V.
7. A resistor carries 1 A and has resistance 17 Ω. Use V = IR to find the voltage.
17 V
V = I × R = 1 × 17 = 17 V.
8. A resistor carries 7 A and has resistance 29 Ω. Use V = IR to find the voltage.
203 V
V = I × R = 7 × 29 = 203 V.
9. A resistor carries 8 A and has resistance 49 Ω. Use V = IR to find the voltage.
392 V
V = I × R = 8 × 49 = 392 V.
10. A resistor carries 6 A and has resistance 39 Ω. Use V = IR to find the voltage.
234 V
V = I × R = 6 × 39 = 234 V.
11. A resistor carries 6 A and has resistance 41 Ω. Use V = IR to find the voltage.
246 V
V = I × R = 6 × 41 = 246 V.
12. A resistor carries 5 A and has resistance 28 Ω. Use V = IR to find the voltage.
140 V
V = I × R = 5 × 28 = 140 V.

12 questions · Seed 47 · Age guidance, not curriculum certification