Question #4c100
1 Answer
Apr 12, 2017
Explanation:
Let
A motor has coils turning in a magnetic field.
We know that whenever a coil turns in a magnetic field an emf is induced in the coil. This emf, known as the back emf, acts against the applied voltage that's initially caused the motor to spin.
Hence, net Voltage applied to the motor
Total resistance in the circuit
Applying Ohm's law