The wiring in a motor has resistance of 1.2 Ω and produces a back emf of 0.62 V when connected to a 10.3-V battery of negligible resistance.Find the current flow through the motor.

Question

Quizplus · Accepted Answer

Using Kirchhoff's voltage law, we can write:

10.3 V - I*R - 0.62 V = 0

where I is the current flow through the motor and R is the resistance of the motor. Solving for I, we get:

I = (10.3 V - 0.62 V) / R = 8.1 A

Therefore, the correct answer is D) 8.1 A.

The Wiring in a Motor Has Resistance of 1