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 6 A and has resistance 43 Ω. Use V = IR to find the voltage.
I = 6 A · R = 43 Ω
2. A resistor carries 9 A and has resistance 36 Ω. Use V = IR to find the voltage.
I = 9 A · R = 36 Ω
3. A resistor carries 1 A and has resistance 36 Ω. Use V = IR to find the voltage.
I = 1 A · R = 36 Ω
4. A resistor carries 6 A and has resistance 18 Ω. Use V = IR to find the voltage.
I = 6 A · R = 18 Ω
5. A resistor carries 12 A and has resistance 32 Ω. Use V = IR to find the voltage.
I = 12 A · R = 32 Ω
6. A resistor carries 5 A and has resistance 44 Ω. Use V = IR to find the voltage.
I = 5 A · R = 44 Ω
7. A resistor carries 3 A and has resistance 43 Ω. Use V = IR to find the voltage.
I = 3 A · R = 43 Ω
8. A resistor carries 7 A and has resistance 48 Ω. Use V = IR to find the voltage.
I = 7 A · R = 48 Ω
9. A resistor carries 7 A and has resistance 38 Ω. Use V = IR to find the voltage.
I = 7 A · R = 38 Ω
10. A resistor carries 8 A and has resistance 35 Ω. Use V = IR to find the voltage.
I = 8 A · R = 35 Ω
11. A resistor carries 6 A and has resistance 39 Ω. Use V = IR to find the voltage.
I = 6 A · R = 39 Ω
12. A resistor carries 10 A and has resistance 14 Ω. Use V = IR to find the voltage.
I = 10 A · R = 14 Ω

12 questions · Seed 48 · 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 6 A and has resistance 43 Ω. Use V = IR to find the voltage.
258 V
V = I × R = 6 × 43 = 258 V.
2. A resistor carries 9 A and has resistance 36 Ω. Use V = IR to find the voltage.
324 V
V = I × R = 9 × 36 = 324 V.
3. A resistor carries 1 A and has resistance 36 Ω. Use V = IR to find the voltage.
36 V
V = I × R = 1 × 36 = 36 V.
4. A resistor carries 6 A and has resistance 18 Ω. Use V = IR to find the voltage.
108 V
V = I × R = 6 × 18 = 108 V.
5. A resistor carries 12 A and has resistance 32 Ω. Use V = IR to find the voltage.
384 V
V = I × R = 12 × 32 = 384 V.
6. A resistor carries 5 A and has resistance 44 Ω. Use V = IR to find the voltage.
220 V
V = I × R = 5 × 44 = 220 V.
7. A resistor carries 3 A and has resistance 43 Ω. Use V = IR to find the voltage.
129 V
V = I × R = 3 × 43 = 129 V.
8. A resistor carries 7 A and has resistance 48 Ω. Use V = IR to find the voltage.
336 V
V = I × R = 7 × 48 = 336 V.
9. A resistor carries 7 A and has resistance 38 Ω. Use V = IR to find the voltage.
266 V
V = I × R = 7 × 38 = 266 V.
10. A resistor carries 8 A and has resistance 35 Ω. Use V = IR to find the voltage.
280 V
V = I × R = 8 × 35 = 280 V.
11. A resistor carries 6 A and has resistance 39 Ω. Use V = IR to find the voltage.
234 V
V = I × R = 6 × 39 = 234 V.
12. A resistor carries 10 A and has resistance 14 Ω. Use V = IR to find the voltage.
140 V
V = I × R = 10 × 14 = 140 V.

12 questions · Seed 48 · Age guidance, not curriculum certification

Worksheet StudioPractice pack · Ages 13-15

Take your time. Show your thinking.

1. A resistor carries 6 A and has resistance 43 Ω. Use V = IR to find the voltage.
I = 6 A · R = 43 Ω
2. A resistor carries 9 A and has resistance 36 Ω. Use V = IR to find the voltage.
I = 9 A · R = 36 Ω
3. A resistor carries 1 A and has resistance 36 Ω. Use V = IR to find the voltage.
I = 1 A · R = 36 Ω
4. A resistor carries 6 A and has resistance 18 Ω. Use V = IR to find the voltage.
I = 6 A · R = 18 Ω
5. A resistor carries 12 A and has resistance 32 Ω. Use V = IR to find the voltage.
I = 12 A · R = 32 Ω
6. A resistor carries 5 A and has resistance 44 Ω. Use V = IR to find the voltage.
I = 5 A · R = 44 Ω
7. A resistor carries 3 A and has resistance 43 Ω. Use V = IR to find the voltage.
I = 3 A · R = 43 Ω
8. A resistor carries 7 A and has resistance 48 Ω. Use V = IR to find the voltage.
I = 7 A · R = 48 Ω
9. A resistor carries 7 A and has resistance 38 Ω. Use V = IR to find the voltage.
I = 7 A · R = 38 Ω
10. A resistor carries 8 A and has resistance 35 Ω. Use V = IR to find the voltage.
I = 8 A · R = 35 Ω
11. A resistor carries 6 A and has resistance 39 Ω. Use V = IR to find the voltage.
I = 6 A · R = 39 Ω
12. A resistor carries 10 A and has resistance 14 Ω. Use V = IR to find the voltage.
I = 10 A · R = 14 Ω

12 questions · Seed 48 · Age guidance, not curriculum certification

Worksheet StudioAnswer key · Ages 13-15

Answers and reasoning. Review before teaching.

1. A resistor carries 6 A and has resistance 43 Ω. Use V = IR to find the voltage.
258 V
V = I × R = 6 × 43 = 258 V.
2. A resistor carries 9 A and has resistance 36 Ω. Use V = IR to find the voltage.
324 V
V = I × R = 9 × 36 = 324 V.
3. A resistor carries 1 A and has resistance 36 Ω. Use V = IR to find the voltage.
36 V
V = I × R = 1 × 36 = 36 V.
4. A resistor carries 6 A and has resistance 18 Ω. Use V = IR to find the voltage.
108 V
V = I × R = 6 × 18 = 108 V.
5. A resistor carries 12 A and has resistance 32 Ω. Use V = IR to find the voltage.
384 V
V = I × R = 12 × 32 = 384 V.
6. A resistor carries 5 A and has resistance 44 Ω. Use V = IR to find the voltage.
220 V
V = I × R = 5 × 44 = 220 V.
7. A resistor carries 3 A and has resistance 43 Ω. Use V = IR to find the voltage.
129 V
V = I × R = 3 × 43 = 129 V.
8. A resistor carries 7 A and has resistance 48 Ω. Use V = IR to find the voltage.
336 V
V = I × R = 7 × 48 = 336 V.
9. A resistor carries 7 A and has resistance 38 Ω. Use V = IR to find the voltage.
266 V
V = I × R = 7 × 38 = 266 V.
10. A resistor carries 8 A and has resistance 35 Ω. Use V = IR to find the voltage.
280 V
V = I × R = 8 × 35 = 280 V.
11. A resistor carries 6 A and has resistance 39 Ω. Use V = IR to find the voltage.
234 V
V = I × R = 6 × 39 = 234 V.
12. A resistor carries 10 A and has resistance 14 Ω. Use V = IR to find the voltage.
140 V
V = I × R = 10 × 14 = 140 V.

12 questions · Seed 48 · Age guidance, not curriculum certification