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 43 Ω. Use V = IR to find the voltage.
I = 6 A · R = 43 Ω
2. A resistor carries 1 A and has resistance 4 Ω. Use V = IR to find the voltage.
I = 1 A · R = 4 Ω
3. A resistor carries 5 A and has resistance 16 Ω. Use V = IR to find the voltage.
I = 5 A · R = 16 Ω
4. A resistor carries 12 A and has resistance 3 Ω. Use V = IR to find the voltage.
I = 12 A · R = 3 Ω
5. A resistor carries 1 A and has resistance 50 Ω. Use V = IR to find the voltage.
I = 1 A · R = 50 Ω
6. A resistor carries 11 A and has resistance 46 Ω. Use V = IR to find the voltage.
I = 11 A · R = 46 Ω
7. A resistor carries 10 A and has resistance 47 Ω. Use V = IR to find the voltage.
I = 10 A · R = 47 Ω
8. A resistor carries 10 A and has resistance 31 Ω. Use V = IR to find the voltage.
I = 10 A · R = 31 Ω
9. A resistor carries 9 A and has resistance 47 Ω. Use V = IR to find the voltage.
I = 9 A · R = 47 Ω
10. A resistor carries 4 A and has resistance 12 Ω. Use V = IR to find the voltage.
I = 4 A · R = 12 Ω
11. A resistor carries 7 A and has resistance 10 Ω. Use V = IR to find the voltage.
I = 7 A · R = 10 Ω
12. A resistor carries 1 A and has resistance 34 Ω. Use V = IR to find the voltage.
I = 1 A · R = 34 Ω

12 questions · Seed 104737 · 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 43 Ω. Use V = IR to find the voltage.
258 V
V = I × R = 6 × 43 = 258 V.
2. A resistor carries 1 A and has resistance 4 Ω. Use V = IR to find the voltage.
4 V
V = I × R = 1 × 4 = 4 V.
3. 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.
4. A resistor carries 12 A and has resistance 3 Ω. Use V = IR to find the voltage.
36 V
V = I × R = 12 × 3 = 36 V.
5. A resistor carries 1 A and has resistance 50 Ω. Use V = IR to find the voltage.
50 V
V = I × R = 1 × 50 = 50 V.
6. A resistor carries 11 A and has resistance 46 Ω. Use V = IR to find the voltage.
506 V
V = I × R = 11 × 46 = 506 V.
7. 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.
8. A resistor carries 10 A and has resistance 31 Ω. Use V = IR to find the voltage.
310 V
V = I × R = 10 × 31 = 310 V.
9. A resistor carries 9 A and has resistance 47 Ω. Use V = IR to find the voltage.
423 V
V = I × R = 9 × 47 = 423 V.
10. 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.
11. 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. A resistor carries 1 A and has resistance 34 Ω. Use V = IR to find the voltage.
34 V
V = I × R = 1 × 34 = 34 V.

12 questions · Seed 104737 · 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 43 Ω. Use V = IR to find the voltage.
I = 6 A · R = 43 Ω
2. A resistor carries 1 A and has resistance 4 Ω. Use V = IR to find the voltage.
I = 1 A · R = 4 Ω
3. A resistor carries 5 A and has resistance 16 Ω. Use V = IR to find the voltage.
I = 5 A · R = 16 Ω
4. A resistor carries 12 A and has resistance 3 Ω. Use V = IR to find the voltage.
I = 12 A · R = 3 Ω
5. A resistor carries 1 A and has resistance 50 Ω. Use V = IR to find the voltage.
I = 1 A · R = 50 Ω
6. A resistor carries 11 A and has resistance 46 Ω. Use V = IR to find the voltage.
I = 11 A · R = 46 Ω
7. A resistor carries 10 A and has resistance 47 Ω. Use V = IR to find the voltage.
I = 10 A · R = 47 Ω
8. A resistor carries 10 A and has resistance 31 Ω. Use V = IR to find the voltage.
I = 10 A · R = 31 Ω
9. A resistor carries 9 A and has resistance 47 Ω. Use V = IR to find the voltage.
I = 9 A · R = 47 Ω
10. A resistor carries 4 A and has resistance 12 Ω. Use V = IR to find the voltage.
I = 4 A · R = 12 Ω
11. A resistor carries 7 A and has resistance 10 Ω. Use V = IR to find the voltage.
I = 7 A · R = 10 Ω
12. A resistor carries 1 A and has resistance 34 Ω. Use V = IR to find the voltage.
I = 1 A · R = 34 Ω

12 questions · Seed 104737 · 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 43 Ω. Use V = IR to find the voltage.
258 V
V = I × R = 6 × 43 = 258 V.
2. A resistor carries 1 A and has resistance 4 Ω. Use V = IR to find the voltage.
4 V
V = I × R = 1 × 4 = 4 V.
3. 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.
4. A resistor carries 12 A and has resistance 3 Ω. Use V = IR to find the voltage.
36 V
V = I × R = 12 × 3 = 36 V.
5. A resistor carries 1 A and has resistance 50 Ω. Use V = IR to find the voltage.
50 V
V = I × R = 1 × 50 = 50 V.
6. A resistor carries 11 A and has resistance 46 Ω. Use V = IR to find the voltage.
506 V
V = I × R = 11 × 46 = 506 V.
7. 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.
8. A resistor carries 10 A and has resistance 31 Ω. Use V = IR to find the voltage.
310 V
V = I × R = 10 × 31 = 310 V.
9. A resistor carries 9 A and has resistance 47 Ω. Use V = IR to find the voltage.
423 V
V = I × R = 9 × 47 = 423 V.
10. 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.
11. 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. A resistor carries 1 A and has resistance 34 Ω. Use V = IR to find the voltage.
34 V
V = I × R = 1 × 34 = 34 V.

12 questions · Seed 104737 · Age guidance, not curriculum certification