MHT CET · Physics · Electromagnetic Induction
The back emf in a DC motor is maximum when,
- A the motor has picked up maximum speed
- B the motor has just started moving
- C the speed of motor is still on increase
- D the motor has just been switched off
Answer & Solution
Correct Answer
(A) the motor has picked up maximum speed
Step-by-step Solution
Detailed explanation
The value of back emf, \(e \propto W\). So, back emf is maximum when the motor has picked up the maximum speed.
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