ScienceAges 16-18

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 16-18

Take your time. Show your thinking.

1. A resistor carries 8 A and has resistance 7 Ω. Use V = IR to find the voltage.
I = 8 A · R = 7 Ω
2. A resistor carries 4 A and has resistance 35 Ω. Use V = IR to find the voltage.
I = 4 A · R = 35 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 1 A and has resistance 48 Ω. Use V = IR to find the voltage.
I = 1 A · R = 48 Ω
5. A resistor carries 2 A and has resistance 34 Ω. Use V = IR to find the voltage.
I = 2 A · R = 34 Ω
6. A resistor carries 3 A and has resistance 15 Ω. Use V = IR to find the voltage.
I = 3 A · R = 15 Ω
7. A resistor carries 9 A and has resistance 3 Ω. Use V = IR to find the voltage.
I = 9 A · R = 3 Ω
8. A resistor carries 8 A and has resistance 27 Ω. Use V = IR to find the voltage.
I = 8 A · R = 27 Ω
9. A resistor carries 3 A and has resistance 41 Ω. Use V = IR to find the voltage.
I = 3 A · R = 41 Ω
10. A resistor carries 1 A and has resistance 9 Ω. Use V = IR to find the voltage.
I = 1 A · R = 9 Ω
11. A resistor carries 12 A and has resistance 27 Ω. Use V = IR to find the voltage.
I = 12 A · R = 27 Ω
12. A resistor carries 11 A and has resistance 14 Ω. Use V = IR to find the voltage.
I = 11 A · R = 14 Ω

12 questions · Seed 104741 · Age guidance, not curriculum certification

View the answer key

Worksheet StudioAnswer key · Ages 16-18

Answers and reasoning. Review before teaching.

1. A resistor carries 8 A and has resistance 7 Ω. Use V = IR to find the voltage.
56 V
V = I × R = 8 × 7 = 56 V.
2. A resistor carries 4 A and has resistance 35 Ω. Use V = IR to find the voltage.
140 V
V = I × R = 4 × 35 = 140 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 1 A and has resistance 48 Ω. Use V = IR to find the voltage.
48 V
V = I × R = 1 × 48 = 48 V.
5. A resistor carries 2 A and has resistance 34 Ω. Use V = IR to find the voltage.
68 V
V = I × R = 2 × 34 = 68 V.
6. 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.
7. A resistor carries 9 A and has resistance 3 Ω. Use V = IR to find the voltage.
27 V
V = I × R = 9 × 3 = 27 V.
8. A resistor carries 8 A and has resistance 27 Ω. Use V = IR to find the voltage.
216 V
V = I × R = 8 × 27 = 216 V.
9. A resistor carries 3 A and has resistance 41 Ω. Use V = IR to find the voltage.
123 V
V = I × R = 3 × 41 = 123 V.
10. A resistor carries 1 A and has resistance 9 Ω. Use V = IR to find the voltage.
9 V
V = I × R = 1 × 9 = 9 V.
11. A resistor carries 12 A and has resistance 27 Ω. Use V = IR to find the voltage.
324 V
V = I × R = 12 × 27 = 324 V.
12. A resistor carries 11 A and has resistance 14 Ω. Use V = IR to find the voltage.
154 V
V = I × R = 11 × 14 = 154 V.

12 questions · Seed 104741 · Age guidance, not curriculum certification

Worksheet StudioPractice pack · Ages 16-18

Take your time. Show your thinking.

1. A resistor carries 8 A and has resistance 7 Ω. Use V = IR to find the voltage.
I = 8 A · R = 7 Ω
2. A resistor carries 4 A and has resistance 35 Ω. Use V = IR to find the voltage.
I = 4 A · R = 35 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 1 A and has resistance 48 Ω. Use V = IR to find the voltage.
I = 1 A · R = 48 Ω
5. A resistor carries 2 A and has resistance 34 Ω. Use V = IR to find the voltage.
I = 2 A · R = 34 Ω
6. A resistor carries 3 A and has resistance 15 Ω. Use V = IR to find the voltage.
I = 3 A · R = 15 Ω
7. A resistor carries 9 A and has resistance 3 Ω. Use V = IR to find the voltage.
I = 9 A · R = 3 Ω
8. A resistor carries 8 A and has resistance 27 Ω. Use V = IR to find the voltage.
I = 8 A · R = 27 Ω
9. A resistor carries 3 A and has resistance 41 Ω. Use V = IR to find the voltage.
I = 3 A · R = 41 Ω
10. A resistor carries 1 A and has resistance 9 Ω. Use V = IR to find the voltage.
I = 1 A · R = 9 Ω
11. A resistor carries 12 A and has resistance 27 Ω. Use V = IR to find the voltage.
I = 12 A · R = 27 Ω
12. A resistor carries 11 A and has resistance 14 Ω. Use V = IR to find the voltage.
I = 11 A · R = 14 Ω

12 questions · Seed 104741 · Age guidance, not curriculum certification

Worksheet StudioAnswer key · Ages 16-18

Answers and reasoning. Review before teaching.

1. A resistor carries 8 A and has resistance 7 Ω. Use V = IR to find the voltage.
56 V
V = I × R = 8 × 7 = 56 V.
2. A resistor carries 4 A and has resistance 35 Ω. Use V = IR to find the voltage.
140 V
V = I × R = 4 × 35 = 140 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 1 A and has resistance 48 Ω. Use V = IR to find the voltage.
48 V
V = I × R = 1 × 48 = 48 V.
5. A resistor carries 2 A and has resistance 34 Ω. Use V = IR to find the voltage.
68 V
V = I × R = 2 × 34 = 68 V.
6. 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.
7. A resistor carries 9 A and has resistance 3 Ω. Use V = IR to find the voltage.
27 V
V = I × R = 9 × 3 = 27 V.
8. A resistor carries 8 A and has resistance 27 Ω. Use V = IR to find the voltage.
216 V
V = I × R = 8 × 27 = 216 V.
9. A resistor carries 3 A and has resistance 41 Ω. Use V = IR to find the voltage.
123 V
V = I × R = 3 × 41 = 123 V.
10. A resistor carries 1 A and has resistance 9 Ω. Use V = IR to find the voltage.
9 V
V = I × R = 1 × 9 = 9 V.
11. A resistor carries 12 A and has resistance 27 Ω. Use V = IR to find the voltage.
324 V
V = I × R = 12 × 27 = 324 V.
12. A resistor carries 11 A and has resistance 14 Ω. Use V = IR to find the voltage.
154 V
V = I × R = 11 × 14 = 154 V.

12 questions · Seed 104741 · Age guidance, not curriculum certification