The wiring in a motor has resistance of 4.0 Ω and produces a back emf of 1.1 V when connected to a 15.0-V battery of negligible resistance.Find the current flow through the motor.

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Quizplus · Accepted Answer

The current can be calculated using Ohm's Law: I = (V - E) / R, where V is the battery voltage, E is the back emf, and R is the resistance. So, I = (15.0 V - 1.1 V) / 4.0 Ω = 3.475 A, which rounds to 3.5 A.

The Wiring in a Motor Has Resistance of 4