Question

A complete circuit contains two parallel-connected devices and a generator for providing the electromotive force. The resistance of the first device is 12 ohms, the resistance of the second device is 4 ohms, and the voltage developed by the generator is 40 V. What is the magnitude of the current flowing through the first device?

Answer 1

Answer is: 3.33 Amperes (A)

Given:

Device 1: 12 ohms

Device 2: 4 ohms

Voltage Total: 40 V (Volts)


Solution: 40 V = V1 = V2

Voltage = IR

I1 = V1 / R1

I1 = (40 V) / (12 Ohms) = 3.334 A (Amperes)

I1 = 3.33 A