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 3 A and has resistance 33 Ω. Use V = IR to find the voltage.
I = 3 A · R = 33 Ω
2. A resistor carries 11 A and has resistance 37 Ω. Use V = IR to find the voltage.
I = 11 A · R = 37 Ω
3. A resistor carries 11 A and has resistance 35 Ω. Use V = IR to find the voltage.
I = 11 A · R = 35 Ω
4. A resistor carries 11 A and has resistance 15 Ω. Use V = IR to find the voltage.
I = 11 A · R = 15 Ω
5. A resistor carries 1 A and has resistance 48 Ω. Use V = IR to find the voltage.
I = 1 A · R = 48 Ω
6. A resistor carries 2 A and has resistance 20 Ω. Use V = IR to find the voltage.
I = 2 A · R = 20 Ω
7. A resistor carries 4 A and has resistance 9 Ω. Use V = IR to find the voltage.
I = 4 A · R = 9 Ω
8. A resistor carries 3 A and has resistance 35 Ω. Use V = IR to find the voltage.
I = 3 A · R = 35 Ω
9. A resistor carries 12 A and has resistance 38 Ω. Use V = IR to find the voltage.
I = 12 A · R = 38 Ω
10. A resistor carries 1 A and has resistance 10 Ω. Use V = IR to find the voltage.
I = 1 A · R = 10 Ω
11. A resistor carries 6 A and has resistance 36 Ω. Use V = IR to find the voltage.
I = 6 A · R = 36 Ω
12. A resistor carries 4 A and has resistance 43 Ω. Use V = IR to find the voltage.
I = 4 A · R = 43 Ω

12 questions · Seed 44 · 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 3 A and has resistance 33 Ω. Use V = IR to find the voltage.
99 V
V = I × R = 3 × 33 = 99 V.
2. A resistor carries 11 A and has resistance 37 Ω. Use V = IR to find the voltage.
407 V
V = I × R = 11 × 37 = 407 V.
3. A resistor carries 11 A and has resistance 35 Ω. Use V = IR to find the voltage.
385 V
V = I × R = 11 × 35 = 385 V.
4. A resistor carries 11 A and has resistance 15 Ω. Use V = IR to find the voltage.
165 V
V = I × R = 11 × 15 = 165 V.
5. 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.
6. A resistor carries 2 A and has resistance 20 Ω. Use V = IR to find the voltage.
40 V
V = I × R = 2 × 20 = 40 V.
7. A resistor carries 4 A and has resistance 9 Ω. Use V = IR to find the voltage.
36 V
V = I × R = 4 × 9 = 36 V.
8. A resistor carries 3 A and has resistance 35 Ω. Use V = IR to find the voltage.
105 V
V = I × R = 3 × 35 = 105 V.
9. A resistor carries 12 A and has resistance 38 Ω. Use V = IR to find the voltage.
456 V
V = I × R = 12 × 38 = 456 V.
10. A resistor carries 1 A and has resistance 10 Ω. Use V = IR to find the voltage.
10 V
V = I × R = 1 × 10 = 10 V.
11. A resistor carries 6 A and has resistance 36 Ω. Use V = IR to find the voltage.
216 V
V = I × R = 6 × 36 = 216 V.
12. 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.

12 questions · Seed 44 · Age guidance, not curriculum certification

Worksheet StudioPractice pack · Ages 13-15

Take your time. Show your thinking.

1. A resistor carries 3 A and has resistance 33 Ω. Use V = IR to find the voltage.
I = 3 A · R = 33 Ω
2. A resistor carries 11 A and has resistance 37 Ω. Use V = IR to find the voltage.
I = 11 A · R = 37 Ω
3. A resistor carries 11 A and has resistance 35 Ω. Use V = IR to find the voltage.
I = 11 A · R = 35 Ω
4. A resistor carries 11 A and has resistance 15 Ω. Use V = IR to find the voltage.
I = 11 A · R = 15 Ω
5. A resistor carries 1 A and has resistance 48 Ω. Use V = IR to find the voltage.
I = 1 A · R = 48 Ω
6. A resistor carries 2 A and has resistance 20 Ω. Use V = IR to find the voltage.
I = 2 A · R = 20 Ω
7. A resistor carries 4 A and has resistance 9 Ω. Use V = IR to find the voltage.
I = 4 A · R = 9 Ω
8. A resistor carries 3 A and has resistance 35 Ω. Use V = IR to find the voltage.
I = 3 A · R = 35 Ω
9. A resistor carries 12 A and has resistance 38 Ω. Use V = IR to find the voltage.
I = 12 A · R = 38 Ω
10. A resistor carries 1 A and has resistance 10 Ω. Use V = IR to find the voltage.
I = 1 A · R = 10 Ω
11. A resistor carries 6 A and has resistance 36 Ω. Use V = IR to find the voltage.
I = 6 A · R = 36 Ω
12. A resistor carries 4 A and has resistance 43 Ω. Use V = IR to find the voltage.
I = 4 A · R = 43 Ω

12 questions · Seed 44 · Age guidance, not curriculum certification

Worksheet StudioAnswer key · Ages 13-15

Answers and reasoning. Review before teaching.

1. A resistor carries 3 A and has resistance 33 Ω. Use V = IR to find the voltage.
99 V
V = I × R = 3 × 33 = 99 V.
2. A resistor carries 11 A and has resistance 37 Ω. Use V = IR to find the voltage.
407 V
V = I × R = 11 × 37 = 407 V.
3. A resistor carries 11 A and has resistance 35 Ω. Use V = IR to find the voltage.
385 V
V = I × R = 11 × 35 = 385 V.
4. A resistor carries 11 A and has resistance 15 Ω. Use V = IR to find the voltage.
165 V
V = I × R = 11 × 15 = 165 V.
5. 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.
6. A resistor carries 2 A and has resistance 20 Ω. Use V = IR to find the voltage.
40 V
V = I × R = 2 × 20 = 40 V.
7. A resistor carries 4 A and has resistance 9 Ω. Use V = IR to find the voltage.
36 V
V = I × R = 4 × 9 = 36 V.
8. A resistor carries 3 A and has resistance 35 Ω. Use V = IR to find the voltage.
105 V
V = I × R = 3 × 35 = 105 V.
9. A resistor carries 12 A and has resistance 38 Ω. Use V = IR to find the voltage.
456 V
V = I × R = 12 × 38 = 456 V.
10. A resistor carries 1 A and has resistance 10 Ω. Use V = IR to find the voltage.
10 V
V = I × R = 1 × 10 = 10 V.
11. A resistor carries 6 A and has resistance 36 Ω. Use V = IR to find the voltage.
216 V
V = I × R = 6 × 36 = 216 V.
12. 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.

12 questions · Seed 44 · Age guidance, not curriculum certification