P = V²/R

Find either P, V or R.

Remember you will need to deal with V² instead of just V

1. V = 50 V, R = 250W, P = ?
2. V = 10 V, R = 10W, P = ?
3. V = 4 V, R = 80W, P = ?
4. V = 20 V, R = 4 kW, P = ?




Remember to work with the square of V in these questions.

5. V = 40 V, P = 8W, R = ?
6. V = 14 V, P = 24.5 W, R = ?
7. V = 200 V, P = 1 kW, R = ?
8. V = 500 mV, P = 62.5 mW, R = ?




Remember to find the square root when finding V in these questions

9. P = 3 W, R = 300 W, V = ?
10. P = 20 W, R = 80 W, V = ?
11. P = 1.5 W, R = 150 W, V = ?
12. P = 700 mW, R = 7 mW, V = ?