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 8 A and has resistance 13 Ω. Use V = IR to find the voltage.
I = 8 A · R = 13 Ω
2. A resistor carries 1 A and has resistance 16 Ω. Use V = IR to find the voltage.
I = 1 A · R = 16 Ω
3. A resistor carries 12 A and has resistance 25 Ω. Use V = IR to find the voltage.
I = 12 A · R = 25 Ω
4. A resistor carries 7 A and has resistance 29 Ω. Use V = IR to find the voltage.
I = 7 A · R = 29 Ω
5. A resistor carries 8 A and has resistance 16 Ω. Use V = IR to find the voltage.
I = 8 A · R = 16 Ω
6. A resistor carries 7 A and has resistance 32 Ω. Use V = IR to find the voltage.
I = 7 A · R = 32 Ω
7. A resistor carries 8 A and has resistance 38 Ω. Use V = IR to find the voltage.
I = 8 A · R = 38 Ω
8. A resistor carries 4 A and has resistance 4 Ω. Use V = IR to find the voltage.
I = 4 A · R = 4 Ω
9. A resistor carries 7 A and has resistance 7 Ω. Use V = IR to find the voltage.
I = 7 A · R = 7 Ω
10. A resistor carries 3 A and has resistance 15 Ω. Use V = IR to find the voltage.
I = 3 A · R = 15 Ω
11. A resistor carries 3 A and has resistance 48 Ω. Use V = IR to find the voltage.
I = 3 A · R = 48 Ω
12. A resistor carries 3 A and has resistance 6 Ω. Use V = IR to find the voltage.
I = 3 A · R = 6 Ω

12 questions · Seed 53 · 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 8 A and has resistance 13 Ω. Use V = IR to find the voltage.
104 V
V = I × R = 8 × 13 = 104 V.
2. A resistor carries 1 A and has resistance 16 Ω. Use V = IR to find the voltage.
16 V
V = I × R = 1 × 16 = 16 V.
3. A resistor carries 12 A and has resistance 25 Ω. Use V = IR to find the voltage.
300 V
V = I × R = 12 × 25 = 300 V.
4. 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.
5. A resistor carries 8 A and has resistance 16 Ω. Use V = IR to find the voltage.
128 V
V = I × R = 8 × 16 = 128 V.
6. A resistor carries 7 A and has resistance 32 Ω. Use V = IR to find the voltage.
224 V
V = I × R = 7 × 32 = 224 V.
7. A resistor carries 8 A and has resistance 38 Ω. Use V = IR to find the voltage.
304 V
V = I × R = 8 × 38 = 304 V.
8. A resistor carries 4 A and has resistance 4 Ω. Use V = IR to find the voltage.
16 V
V = I × R = 4 × 4 = 16 V.
9. A resistor carries 7 A and has resistance 7 Ω. Use V = IR to find the voltage.
49 V
V = I × R = 7 × 7 = 49 V.
10. A resistor carries 3 A and has resistance 15 Ω. Use V = IR to find the voltage.
45 V
V = I × R = 3 × 15 = 45 V.
11. A resistor carries 3 A and has resistance 48 Ω. Use V = IR to find the voltage.
144 V
V = I × R = 3 × 48 = 144 V.
12. A resistor carries 3 A and has resistance 6 Ω. Use V = IR to find the voltage.
18 V
V = I × R = 3 × 6 = 18 V.

12 questions · Seed 53 · Age guidance, not curriculum certification

Worksheet StudioPractice pack · Ages 13-15

Take your time. Show your thinking.

1. A resistor carries 8 A and has resistance 13 Ω. Use V = IR to find the voltage.
I = 8 A · R = 13 Ω
2. A resistor carries 1 A and has resistance 16 Ω. Use V = IR to find the voltage.
I = 1 A · R = 16 Ω
3. A resistor carries 12 A and has resistance 25 Ω. Use V = IR to find the voltage.
I = 12 A · R = 25 Ω
4. A resistor carries 7 A and has resistance 29 Ω. Use V = IR to find the voltage.
I = 7 A · R = 29 Ω
5. A resistor carries 8 A and has resistance 16 Ω. Use V = IR to find the voltage.
I = 8 A · R = 16 Ω
6. A resistor carries 7 A and has resistance 32 Ω. Use V = IR to find the voltage.
I = 7 A · R = 32 Ω
7. A resistor carries 8 A and has resistance 38 Ω. Use V = IR to find the voltage.
I = 8 A · R = 38 Ω
8. A resistor carries 4 A and has resistance 4 Ω. Use V = IR to find the voltage.
I = 4 A · R = 4 Ω
9. A resistor carries 7 A and has resistance 7 Ω. Use V = IR to find the voltage.
I = 7 A · R = 7 Ω
10. A resistor carries 3 A and has resistance 15 Ω. Use V = IR to find the voltage.
I = 3 A · R = 15 Ω
11. A resistor carries 3 A and has resistance 48 Ω. Use V = IR to find the voltage.
I = 3 A · R = 48 Ω
12. A resistor carries 3 A and has resistance 6 Ω. Use V = IR to find the voltage.
I = 3 A · R = 6 Ω

12 questions · Seed 53 · Age guidance, not curriculum certification

Worksheet StudioAnswer key · Ages 13-15

Answers and reasoning. Review before teaching.

1. A resistor carries 8 A and has resistance 13 Ω. Use V = IR to find the voltage.
104 V
V = I × R = 8 × 13 = 104 V.
2. A resistor carries 1 A and has resistance 16 Ω. Use V = IR to find the voltage.
16 V
V = I × R = 1 × 16 = 16 V.
3. A resistor carries 12 A and has resistance 25 Ω. Use V = IR to find the voltage.
300 V
V = I × R = 12 × 25 = 300 V.
4. 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.
5. A resistor carries 8 A and has resistance 16 Ω. Use V = IR to find the voltage.
128 V
V = I × R = 8 × 16 = 128 V.
6. A resistor carries 7 A and has resistance 32 Ω. Use V = IR to find the voltage.
224 V
V = I × R = 7 × 32 = 224 V.
7. A resistor carries 8 A and has resistance 38 Ω. Use V = IR to find the voltage.
304 V
V = I × R = 8 × 38 = 304 V.
8. A resistor carries 4 A and has resistance 4 Ω. Use V = IR to find the voltage.
16 V
V = I × R = 4 × 4 = 16 V.
9. A resistor carries 7 A and has resistance 7 Ω. Use V = IR to find the voltage.
49 V
V = I × R = 7 × 7 = 49 V.
10. A resistor carries 3 A and has resistance 15 Ω. Use V = IR to find the voltage.
45 V
V = I × R = 3 × 15 = 45 V.
11. A resistor carries 3 A and has resistance 48 Ω. Use V = IR to find the voltage.
144 V
V = I × R = 3 × 48 = 144 V.
12. A resistor carries 3 A and has resistance 6 Ω. Use V = IR to find the voltage.
18 V
V = I × R = 3 × 6 = 18 V.

12 questions · Seed 53 · Age guidance, not curriculum certification