Question

A complete circuit contains two parall-connected devices and agenerator for providing the electromotive force. The resistance ofthe first device is 12 ohms, the resistance of the second device is4 ohms, and the voltage developed by the generator is 40 V. What isthe magnitude of the current flowing through the firstdevice?

(a) 3.33A (c) 10 A
(b) 8A (d) 13.32 A

Answer 1

3.33 A

Step-by-step explanation:

Two resistors wired in paralle to a voltage source will both have the same voltage applied.

V = I R
V/R = I for the 12 ohm : 40 V/ 12Ω = 3.33 A