A circuit has a current of 3.6 A and a resistance of 5.0 Ω.

What is the voltage applied to the circuit?

0.72 V

1.4 V

8.6 V

18 V

If a circuit has a current of 3.6 Amps and resistance of 5 Ohms, then Ohm's law can be used to find the voltage. Ohm's law states that the voltage is equal to the product of current and resistance (V=IR). In this case the voltage is equal to 3.6 Amps x 5 Ohms = 18.0 Volts. The law can also be used with the rearranged equation to obtain current or resistance.