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 4 A and has resistance 34 Ω. Use V = IR to find the voltage.
I = 4 A · R = 34 Ω
2. A resistor carries 11 A and has resistance 22 Ω. Use V = IR to find the voltage.
I = 11 A · R = 22 Ω
3. A resistor carries 3 A and has resistance 17 Ω. Use V = IR to find the voltage.
I = 3 A · R = 17 Ω
4. A resistor carries 8 A and has resistance 36 Ω. Use V = IR to find the voltage.
I = 8 A · R = 36 Ω
5. A resistor carries 2 A and has resistance 6 Ω. Use V = IR to find the voltage.
I = 2 A · R = 6 Ω
6. A resistor carries 1 A and has resistance 43 Ω. Use V = IR to find the voltage.
I = 1 A · R = 43 Ω
7. A resistor carries 11 A and has resistance 11 Ω. Use V = IR to find the voltage.
I = 11 A · R = 11 Ω
8. A resistor carries 10 A and has resistance 22 Ω. Use V = IR to find the voltage.
I = 10 A · R = 22 Ω
9. A resistor carries 10 A and has resistance 19 Ω. Use V = IR to find the voltage.
I = 10 A · R = 19 Ω
10. A resistor carries 4 A and has resistance 18 Ω. Use V = IR to find the voltage.
I = 4 A · R = 18 Ω
11. A resistor carries 6 A and has resistance 19 Ω. Use V = IR to find the voltage.
I = 6 A · R = 19 Ω
12. A resistor carries 10 A and has resistance 2 Ω. Use V = IR to find the voltage.
I = 10 A · R = 2 Ω

12 questions · Seed 54 · 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 4 A and has resistance 34 Ω. Use V = IR to find the voltage.
136 V
V = I × R = 4 × 34 = 136 V.
2. 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.
3. A resistor carries 3 A and has resistance 17 Ω. Use V = IR to find the voltage.
51 V
V = I × R = 3 × 17 = 51 V.
4. A resistor carries 8 A and has resistance 36 Ω. Use V = IR to find the voltage.
288 V
V = I × R = 8 × 36 = 288 V.
5. A resistor carries 2 A and has resistance 6 Ω. Use V = IR to find the voltage.
12 V
V = I × R = 2 × 6 = 12 V.
6. A resistor carries 1 A and has resistance 43 Ω. Use V = IR to find the voltage.
43 V
V = I × R = 1 × 43 = 43 V.
7. A resistor carries 11 A and has resistance 11 Ω. Use V = IR to find the voltage.
121 V
V = I × R = 11 × 11 = 121 V.
8. A resistor carries 10 A and has resistance 22 Ω. Use V = IR to find the voltage.
220 V
V = I × R = 10 × 22 = 220 V.
9. A resistor carries 10 A and has resistance 19 Ω. Use V = IR to find the voltage.
190 V
V = I × R = 10 × 19 = 190 V.
10. A resistor carries 4 A and has resistance 18 Ω. Use V = IR to find the voltage.
72 V
V = I × R = 4 × 18 = 72 V.
11. A resistor carries 6 A and has resistance 19 Ω. Use V = IR to find the voltage.
114 V
V = I × R = 6 × 19 = 114 V.
12. A resistor carries 10 A and has resistance 2 Ω. Use V = IR to find the voltage.
20 V
V = I × R = 10 × 2 = 20 V.

12 questions · Seed 54 · Age guidance, not curriculum certification

Worksheet StudioPractice pack · Ages 13-15

Take your time. Show your thinking.

1. A resistor carries 4 A and has resistance 34 Ω. Use V = IR to find the voltage.
I = 4 A · R = 34 Ω
2. A resistor carries 11 A and has resistance 22 Ω. Use V = IR to find the voltage.
I = 11 A · R = 22 Ω
3. A resistor carries 3 A and has resistance 17 Ω. Use V = IR to find the voltage.
I = 3 A · R = 17 Ω
4. A resistor carries 8 A and has resistance 36 Ω. Use V = IR to find the voltage.
I = 8 A · R = 36 Ω
5. A resistor carries 2 A and has resistance 6 Ω. Use V = IR to find the voltage.
I = 2 A · R = 6 Ω
6. A resistor carries 1 A and has resistance 43 Ω. Use V = IR to find the voltage.
I = 1 A · R = 43 Ω
7. A resistor carries 11 A and has resistance 11 Ω. Use V = IR to find the voltage.
I = 11 A · R = 11 Ω
8. A resistor carries 10 A and has resistance 22 Ω. Use V = IR to find the voltage.
I = 10 A · R = 22 Ω
9. A resistor carries 10 A and has resistance 19 Ω. Use V = IR to find the voltage.
I = 10 A · R = 19 Ω
10. A resistor carries 4 A and has resistance 18 Ω. Use V = IR to find the voltage.
I = 4 A · R = 18 Ω
11. A resistor carries 6 A and has resistance 19 Ω. Use V = IR to find the voltage.
I = 6 A · R = 19 Ω
12. A resistor carries 10 A and has resistance 2 Ω. Use V = IR to find the voltage.
I = 10 A · R = 2 Ω

12 questions · Seed 54 · Age guidance, not curriculum certification

Worksheet StudioAnswer key · Ages 13-15

Answers and reasoning. Review before teaching.

1. A resistor carries 4 A and has resistance 34 Ω. Use V = IR to find the voltage.
136 V
V = I × R = 4 × 34 = 136 V.
2. 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.
3. A resistor carries 3 A and has resistance 17 Ω. Use V = IR to find the voltage.
51 V
V = I × R = 3 × 17 = 51 V.
4. A resistor carries 8 A and has resistance 36 Ω. Use V = IR to find the voltage.
288 V
V = I × R = 8 × 36 = 288 V.
5. A resistor carries 2 A and has resistance 6 Ω. Use V = IR to find the voltage.
12 V
V = I × R = 2 × 6 = 12 V.
6. A resistor carries 1 A and has resistance 43 Ω. Use V = IR to find the voltage.
43 V
V = I × R = 1 × 43 = 43 V.
7. A resistor carries 11 A and has resistance 11 Ω. Use V = IR to find the voltage.
121 V
V = I × R = 11 × 11 = 121 V.
8. A resistor carries 10 A and has resistance 22 Ω. Use V = IR to find the voltage.
220 V
V = I × R = 10 × 22 = 220 V.
9. A resistor carries 10 A and has resistance 19 Ω. Use V = IR to find the voltage.
190 V
V = I × R = 10 × 19 = 190 V.
10. A resistor carries 4 A and has resistance 18 Ω. Use V = IR to find the voltage.
72 V
V = I × R = 4 × 18 = 72 V.
11. A resistor carries 6 A and has resistance 19 Ω. Use V = IR to find the voltage.
114 V
V = I × R = 6 × 19 = 114 V.
12. A resistor carries 10 A and has resistance 2 Ω. Use V = IR to find the voltage.
20 V
V = I × R = 10 × 2 = 20 V.

12 questions · Seed 54 · Age guidance, not curriculum certification