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 2 A and has resistance 39 Ω. Use V = IR to find the voltage.
I = 2 A · R = 39 Ω
2. A resistor carries 2 A and has resistance 19 Ω. Use V = IR to find the voltage.
I = 2 A · R = 19 Ω
3. A resistor carries 6 A and has resistance 15 Ω. Use V = IR to find the voltage.
I = 6 A · R = 15 Ω
4. A resistor carries 1 A and has resistance 23 Ω. Use V = IR to find the voltage.
I = 1 A · R = 23 Ω
5. A resistor carries 2 A and has resistance 11 Ω. Use V = IR to find the voltage.
I = 2 A · R = 11 Ω
6. A resistor carries 11 A and has resistance 39 Ω. Use V = IR to find the voltage.
I = 11 A · R = 39 Ω
7. A resistor carries 4 A and has resistance 45 Ω. Use V = IR to find the voltage.
I = 4 A · R = 45 Ω
8. A resistor carries 9 A and has resistance 7 Ω. Use V = IR to find the voltage.
I = 9 A · R = 7 Ω
9. A resistor carries 3 A and has resistance 19 Ω. Use V = IR to find the voltage.
I = 3 A · R = 19 Ω
10. A resistor carries 3 A and has resistance 50 Ω. Use V = IR to find the voltage.
I = 3 A · R = 50 Ω
11. A resistor carries 7 A and has resistance 47 Ω. Use V = IR to find the voltage.
I = 7 A · R = 47 Ω
12. A resistor carries 11 A and has resistance 45 Ω. Use V = IR to find the voltage.
I = 11 A · R = 45 Ω

12 questions · Seed 104738 · 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 2 A and has resistance 39 Ω. Use V = IR to find the voltage.
78 V
V = I × R = 2 × 39 = 78 V.
2. A resistor carries 2 A and has resistance 19 Ω. Use V = IR to find the voltage.
38 V
V = I × R = 2 × 19 = 38 V.
3. A resistor carries 6 A and has resistance 15 Ω. Use V = IR to find the voltage.
90 V
V = I × R = 6 × 15 = 90 V.
4. A resistor carries 1 A and has resistance 23 Ω. Use V = IR to find the voltage.
23 V
V = I × R = 1 × 23 = 23 V.
5. A resistor carries 2 A and has resistance 11 Ω. Use V = IR to find the voltage.
22 V
V = I × R = 2 × 11 = 22 V.
6. A resistor carries 11 A and has resistance 39 Ω. Use V = IR to find the voltage.
429 V
V = I × R = 11 × 39 = 429 V.
7. A resistor carries 4 A and has resistance 45 Ω. Use V = IR to find the voltage.
180 V
V = I × R = 4 × 45 = 180 V.
8. A resistor carries 9 A and has resistance 7 Ω. Use V = IR to find the voltage.
63 V
V = I × R = 9 × 7 = 63 V.
9. A resistor carries 3 A and has resistance 19 Ω. Use V = IR to find the voltage.
57 V
V = I × R = 3 × 19 = 57 V.
10. 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.
11. 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.
12. A resistor carries 11 A and has resistance 45 Ω. Use V = IR to find the voltage.
495 V
V = I × R = 11 × 45 = 495 V.

12 questions · Seed 104738 · Age guidance, not curriculum certification

Worksheet StudioPractice pack · Ages 16-18

Take your time. Show your thinking.

1. A resistor carries 2 A and has resistance 39 Ω. Use V = IR to find the voltage.
I = 2 A · R = 39 Ω
2. A resistor carries 2 A and has resistance 19 Ω. Use V = IR to find the voltage.
I = 2 A · R = 19 Ω
3. A resistor carries 6 A and has resistance 15 Ω. Use V = IR to find the voltage.
I = 6 A · R = 15 Ω
4. A resistor carries 1 A and has resistance 23 Ω. Use V = IR to find the voltage.
I = 1 A · R = 23 Ω
5. A resistor carries 2 A and has resistance 11 Ω. Use V = IR to find the voltage.
I = 2 A · R = 11 Ω
6. A resistor carries 11 A and has resistance 39 Ω. Use V = IR to find the voltage.
I = 11 A · R = 39 Ω
7. A resistor carries 4 A and has resistance 45 Ω. Use V = IR to find the voltage.
I = 4 A · R = 45 Ω
8. A resistor carries 9 A and has resistance 7 Ω. Use V = IR to find the voltage.
I = 9 A · R = 7 Ω
9. A resistor carries 3 A and has resistance 19 Ω. Use V = IR to find the voltage.
I = 3 A · R = 19 Ω
10. A resistor carries 3 A and has resistance 50 Ω. Use V = IR to find the voltage.
I = 3 A · R = 50 Ω
11. A resistor carries 7 A and has resistance 47 Ω. Use V = IR to find the voltage.
I = 7 A · R = 47 Ω
12. A resistor carries 11 A and has resistance 45 Ω. Use V = IR to find the voltage.
I = 11 A · R = 45 Ω

12 questions · Seed 104738 · Age guidance, not curriculum certification

Worksheet StudioAnswer key · Ages 16-18

Answers and reasoning. Review before teaching.

1. A resistor carries 2 A and has resistance 39 Ω. Use V = IR to find the voltage.
78 V
V = I × R = 2 × 39 = 78 V.
2. A resistor carries 2 A and has resistance 19 Ω. Use V = IR to find the voltage.
38 V
V = I × R = 2 × 19 = 38 V.
3. A resistor carries 6 A and has resistance 15 Ω. Use V = IR to find the voltage.
90 V
V = I × R = 6 × 15 = 90 V.
4. A resistor carries 1 A and has resistance 23 Ω. Use V = IR to find the voltage.
23 V
V = I × R = 1 × 23 = 23 V.
5. A resistor carries 2 A and has resistance 11 Ω. Use V = IR to find the voltage.
22 V
V = I × R = 2 × 11 = 22 V.
6. A resistor carries 11 A and has resistance 39 Ω. Use V = IR to find the voltage.
429 V
V = I × R = 11 × 39 = 429 V.
7. A resistor carries 4 A and has resistance 45 Ω. Use V = IR to find the voltage.
180 V
V = I × R = 4 × 45 = 180 V.
8. A resistor carries 9 A and has resistance 7 Ω. Use V = IR to find the voltage.
63 V
V = I × R = 9 × 7 = 63 V.
9. A resistor carries 3 A and has resistance 19 Ω. Use V = IR to find the voltage.
57 V
V = I × R = 3 × 19 = 57 V.
10. 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.
11. 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.
12. A resistor carries 11 A and has resistance 45 Ω. Use V = IR to find the voltage.
495 V
V = I × R = 11 × 45 = 495 V.

12 questions · Seed 104738 · Age guidance, not curriculum certification