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.

Choose “Save as PDF” to keep a copy. Use your browser’s paper setting for A4 or Letter.

Worksheet StudioPractice pack · Ages 16-18

Take your time. Show your thinking.

1. A resistor carries 11 A and has resistance 17 Ω. Use V = IR to find the voltage.
I = 11 A · R = 17 Ω
2. A resistor carries 12 A and has resistance 48 Ω. Use V = IR to find the voltage.
I = 12 A · R = 48 Ω
3. A resistor carries 2 A and has resistance 22 Ω. Use V = IR to find the voltage.
I = 2 A · R = 22 Ω
4. A resistor carries 9 A and has resistance 44 Ω. Use V = IR to find the voltage.
I = 9 A · R = 44 Ω
5. A resistor carries 3 A and has resistance 27 Ω. Use V = IR to find the voltage.
I = 3 A · R = 27 Ω
6. A resistor carries 10 A and has resistance 29 Ω. Use V = IR to find the voltage.
I = 10 A · R = 29 Ω
7. A resistor carries 10 A and has resistance 8 Ω. Use V = IR to find the voltage.
I = 10 A · R = 8 Ω
8. A resistor carries 4 A and has resistance 43 Ω. Use V = IR to find the voltage.
I = 4 A · R = 43 Ω
9. A resistor carries 1 A and has resistance 41 Ω. Use V = IR to find the voltage.
I = 1 A · R = 41 Ω
10. A resistor carries 6 A and has resistance 6 Ω. Use V = IR to find the voltage.
I = 6 A · R = 6 Ω
11. A resistor carries 6 A and has resistance 49 Ω. Use V = IR to find the voltage.
I = 6 A · R = 49 Ω
12. A resistor carries 11 A and has resistance 42 Ω. Use V = IR to find the voltage.
I = 11 A · R = 42 Ω

12 questions · Seed 104735 · 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 11 A and has resistance 17 Ω. Use V = IR to find the voltage.
187 V
V = I × R = 11 × 17 = 187 V.
2. A resistor carries 12 A and has resistance 48 Ω. Use V = IR to find the voltage.
576 V
V = I × R = 12 × 48 = 576 V.
3. A resistor carries 2 A and has resistance 22 Ω. Use V = IR to find the voltage.
44 V
V = I × R = 2 × 22 = 44 V.
4. A resistor carries 9 A and has resistance 44 Ω. Use V = IR to find the voltage.
396 V
V = I × R = 9 × 44 = 396 V.
5. A resistor carries 3 A and has resistance 27 Ω. Use V = IR to find the voltage.
81 V
V = I × R = 3 × 27 = 81 V.
6. A resistor carries 10 A and has resistance 29 Ω. Use V = IR to find the voltage.
290 V
V = I × R = 10 × 29 = 290 V.
7. A resistor carries 10 A and has resistance 8 Ω. Use V = IR to find the voltage.
80 V
V = I × R = 10 × 8 = 80 V.
8. A resistor carries 4 A and has resistance 43 Ω. Use V = IR to find the voltage.
172 V
V = I × R = 4 × 43 = 172 V.
9. A resistor carries 1 A and has resistance 41 Ω. Use V = IR to find the voltage.
41 V
V = I × R = 1 × 41 = 41 V.
10. A resistor carries 6 A and has resistance 6 Ω. Use V = IR to find the voltage.
36 V
V = I × R = 6 × 6 = 36 V.
11. A resistor carries 6 A and has resistance 49 Ω. Use V = IR to find the voltage.
294 V
V = I × R = 6 × 49 = 294 V.
12. A resistor carries 11 A and has resistance 42 Ω. Use V = IR to find the voltage.
462 V
V = I × R = 11 × 42 = 462 V.

12 questions · Seed 104735 · Age guidance, not curriculum certification

Worksheet StudioPractice pack · Ages 16-18

Take your time. Show your thinking.

1. A resistor carries 11 A and has resistance 17 Ω. Use V = IR to find the voltage.
I = 11 A · R = 17 Ω
2. A resistor carries 12 A and has resistance 48 Ω. Use V = IR to find the voltage.
I = 12 A · R = 48 Ω
3. A resistor carries 2 A and has resistance 22 Ω. Use V = IR to find the voltage.
I = 2 A · R = 22 Ω
4. A resistor carries 9 A and has resistance 44 Ω. Use V = IR to find the voltage.
I = 9 A · R = 44 Ω
5. A resistor carries 3 A and has resistance 27 Ω. Use V = IR to find the voltage.
I = 3 A · R = 27 Ω
6. A resistor carries 10 A and has resistance 29 Ω. Use V = IR to find the voltage.
I = 10 A · R = 29 Ω
7. A resistor carries 10 A and has resistance 8 Ω. Use V = IR to find the voltage.
I = 10 A · R = 8 Ω
8. A resistor carries 4 A and has resistance 43 Ω. Use V = IR to find the voltage.
I = 4 A · R = 43 Ω
9. A resistor carries 1 A and has resistance 41 Ω. Use V = IR to find the voltage.
I = 1 A · R = 41 Ω
10. A resistor carries 6 A and has resistance 6 Ω. Use V = IR to find the voltage.
I = 6 A · R = 6 Ω
11. A resistor carries 6 A and has resistance 49 Ω. Use V = IR to find the voltage.
I = 6 A · R = 49 Ω
12. A resistor carries 11 A and has resistance 42 Ω. Use V = IR to find the voltage.
I = 11 A · R = 42 Ω

12 questions · Seed 104735 · Age guidance, not curriculum certification

Worksheet StudioAnswer key · Ages 16-18

Answers and reasoning. Review before teaching.

1. A resistor carries 11 A and has resistance 17 Ω. Use V = IR to find the voltage.
187 V
V = I × R = 11 × 17 = 187 V.
2. A resistor carries 12 A and has resistance 48 Ω. Use V = IR to find the voltage.
576 V
V = I × R = 12 × 48 = 576 V.
3. A resistor carries 2 A and has resistance 22 Ω. Use V = IR to find the voltage.
44 V
V = I × R = 2 × 22 = 44 V.
4. A resistor carries 9 A and has resistance 44 Ω. Use V = IR to find the voltage.
396 V
V = I × R = 9 × 44 = 396 V.
5. A resistor carries 3 A and has resistance 27 Ω. Use V = IR to find the voltage.
81 V
V = I × R = 3 × 27 = 81 V.
6. A resistor carries 10 A and has resistance 29 Ω. Use V = IR to find the voltage.
290 V
V = I × R = 10 × 29 = 290 V.
7. A resistor carries 10 A and has resistance 8 Ω. Use V = IR to find the voltage.
80 V
V = I × R = 10 × 8 = 80 V.
8. A resistor carries 4 A and has resistance 43 Ω. Use V = IR to find the voltage.
172 V
V = I × R = 4 × 43 = 172 V.
9. A resistor carries 1 A and has resistance 41 Ω. Use V = IR to find the voltage.
41 V
V = I × R = 1 × 41 = 41 V.
10. A resistor carries 6 A and has resistance 6 Ω. Use V = IR to find the voltage.
36 V
V = I × R = 6 × 6 = 36 V.
11. A resistor carries 6 A and has resistance 49 Ω. Use V = IR to find the voltage.
294 V
V = I × R = 6 × 49 = 294 V.
12. A resistor carries 11 A and has resistance 42 Ω. Use V = IR to find the voltage.
462 V
V = I × R = 11 × 42 = 462 V.

12 questions · Seed 104735 · Age guidance, not curriculum certification