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 6 A and has resistance 18 Ω. Use V = IR to find the voltage.
I = 6 A · R = 18 Ω
2. A resistor carries 2 A and has resistance 33 Ω. Use V = IR to find the voltage.
I = 2 A · R = 33 Ω
3. A resistor carries 8 A and has resistance 20 Ω. Use V = IR to find the voltage.
I = 8 A · R = 20 Ω
4. A resistor carries 7 A and has resistance 47 Ω. Use V = IR to find the voltage.
I = 7 A · R = 47 Ω
5. A resistor carries 1 A and has resistance 28 Ω. Use V = IR to find the voltage.
I = 1 A · R = 28 Ω
6. A resistor carries 1 A and has resistance 46 Ω. Use V = IR to find the voltage.
I = 1 A · R = 46 Ω
7. A resistor carries 3 A and has resistance 50 Ω. Use V = IR to find the voltage.
I = 3 A · R = 50 Ω
8. A resistor carries 12 A and has resistance 30 Ω. Use V = IR to find the voltage.
I = 12 A · R = 30 Ω
9. A resistor carries 9 A and has resistance 27 Ω. Use V = IR to find the voltage.
I = 9 A · R = 27 Ω
10. A resistor carries 5 A and has resistance 16 Ω. Use V = IR to find the voltage.
I = 5 A · R = 16 Ω
11. A resistor carries 12 A and has resistance 22 Ω. Use V = IR to find the voltage.
I = 12 A · R = 22 Ω
12. A resistor carries 7 A and has resistance 10 Ω. Use V = IR to find the voltage.
I = 7 A · R = 10 Ω

12 questions · Seed 42 · 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 6 A and has resistance 18 Ω. Use V = IR to find the voltage.
108 V
V = I × R = 6 × 18 = 108 V.
2. A resistor carries 2 A and has resistance 33 Ω. Use V = IR to find the voltage.
66 V
V = I × R = 2 × 33 = 66 V.
3. A resistor carries 8 A and has resistance 20 Ω. Use V = IR to find the voltage.
160 V
V = I × R = 8 × 20 = 160 V.
4. A resistor carries 7 A and has resistance 47 Ω. Use V = IR to find the voltage.
329 V
V = I × R = 7 × 47 = 329 V.
5. A resistor carries 1 A and has resistance 28 Ω. Use V = IR to find the voltage.
28 V
V = I × R = 1 × 28 = 28 V.
6. A resistor carries 1 A and has resistance 46 Ω. Use V = IR to find the voltage.
46 V
V = I × R = 1 × 46 = 46 V.
7. A resistor carries 3 A and has resistance 50 Ω. Use V = IR to find the voltage.
150 V
V = I × R = 3 × 50 = 150 V.
8. A resistor carries 12 A and has resistance 30 Ω. Use V = IR to find the voltage.
360 V
V = I × R = 12 × 30 = 360 V.
9. A resistor carries 9 A and has resistance 27 Ω. Use V = IR to find the voltage.
243 V
V = I × R = 9 × 27 = 243 V.
10. A resistor carries 5 A and has resistance 16 Ω. Use V = IR to find the voltage.
80 V
V = I × R = 5 × 16 = 80 V.
11. A resistor carries 12 A and has resistance 22 Ω. Use V = IR to find the voltage.
264 V
V = I × R = 12 × 22 = 264 V.
12. A resistor carries 7 A and has resistance 10 Ω. Use V = IR to find the voltage.
70 V
V = I × R = 7 × 10 = 70 V.

12 questions · Seed 42 · Age guidance, not curriculum certification

Worksheet StudioPractice pack · Ages 13-15

Take your time. Show your thinking.

1. A resistor carries 6 A and has resistance 18 Ω. Use V = IR to find the voltage.
I = 6 A · R = 18 Ω
2. A resistor carries 2 A and has resistance 33 Ω. Use V = IR to find the voltage.
I = 2 A · R = 33 Ω
3. A resistor carries 8 A and has resistance 20 Ω. Use V = IR to find the voltage.
I = 8 A · R = 20 Ω
4. A resistor carries 7 A and has resistance 47 Ω. Use V = IR to find the voltage.
I = 7 A · R = 47 Ω
5. A resistor carries 1 A and has resistance 28 Ω. Use V = IR to find the voltage.
I = 1 A · R = 28 Ω
6. A resistor carries 1 A and has resistance 46 Ω. Use V = IR to find the voltage.
I = 1 A · R = 46 Ω
7. A resistor carries 3 A and has resistance 50 Ω. Use V = IR to find the voltage.
I = 3 A · R = 50 Ω
8. A resistor carries 12 A and has resistance 30 Ω. Use V = IR to find the voltage.
I = 12 A · R = 30 Ω
9. A resistor carries 9 A and has resistance 27 Ω. Use V = IR to find the voltage.
I = 9 A · R = 27 Ω
10. A resistor carries 5 A and has resistance 16 Ω. Use V = IR to find the voltage.
I = 5 A · R = 16 Ω
11. A resistor carries 12 A and has resistance 22 Ω. Use V = IR to find the voltage.
I = 12 A · R = 22 Ω
12. A resistor carries 7 A and has resistance 10 Ω. Use V = IR to find the voltage.
I = 7 A · R = 10 Ω

12 questions · Seed 42 · Age guidance, not curriculum certification

Worksheet StudioAnswer key · Ages 13-15

Answers and reasoning. Review before teaching.

1. A resistor carries 6 A and has resistance 18 Ω. Use V = IR to find the voltage.
108 V
V = I × R = 6 × 18 = 108 V.
2. A resistor carries 2 A and has resistance 33 Ω. Use V = IR to find the voltage.
66 V
V = I × R = 2 × 33 = 66 V.
3. A resistor carries 8 A and has resistance 20 Ω. Use V = IR to find the voltage.
160 V
V = I × R = 8 × 20 = 160 V.
4. A resistor carries 7 A and has resistance 47 Ω. Use V = IR to find the voltage.
329 V
V = I × R = 7 × 47 = 329 V.
5. A resistor carries 1 A and has resistance 28 Ω. Use V = IR to find the voltage.
28 V
V = I × R = 1 × 28 = 28 V.
6. A resistor carries 1 A and has resistance 46 Ω. Use V = IR to find the voltage.
46 V
V = I × R = 1 × 46 = 46 V.
7. A resistor carries 3 A and has resistance 50 Ω. Use V = IR to find the voltage.
150 V
V = I × R = 3 × 50 = 150 V.
8. A resistor carries 12 A and has resistance 30 Ω. Use V = IR to find the voltage.
360 V
V = I × R = 12 × 30 = 360 V.
9. A resistor carries 9 A and has resistance 27 Ω. Use V = IR to find the voltage.
243 V
V = I × R = 9 × 27 = 243 V.
10. A resistor carries 5 A and has resistance 16 Ω. Use V = IR to find the voltage.
80 V
V = I × R = 5 × 16 = 80 V.
11. A resistor carries 12 A and has resistance 22 Ω. Use V = IR to find the voltage.
264 V
V = I × R = 12 × 22 = 264 V.
12. A resistor carries 7 A and has resistance 10 Ω. Use V = IR to find the voltage.
70 V
V = I × R = 7 × 10 = 70 V.

12 questions · Seed 42 · Age guidance, not curriculum certification