Question

A 12 volt car battery is connected to a 3 ohm brake light. What is the current carrying energy to the lights?

Answer 1

4 A

Explanation:

V = IR, where V=voltage, I=current, R=resistance. This is Ohm's Law. (remember that for units V = volts, Ω = ohms, A = amperes.)

V = IR

12 V = I * 3 Ω

12/3 = I

I = 4 A