- What would be the effect if there were no back EMF in a DC motor
I know that as per Lenz's Law, back EMF moves in a direction so as to counter the flow of the changing magnetic flux which induced it in the first place. And it does so because if it flowed in the same direction it would contravene the law of conservation of energy as more and more energy would be created without a further input of energy. But what would be the case if, somehow, there were no back EMF. Wouldn't this mean that the supply current would just run at maximum? I've had it suggested that the motor would run faster and faster until it blew up and I can't find (or think of) any answer to this.