Questions
In a dc motor, induced e.m.f. will be maximum
a
When motor takes maximum speed
b
When motor starts rotating
c
When speed of motor increases
d
When motor is switched off
detailed solution
Correct option is A
Back emf ∝ speed of motor.Talk to our academic expert!
Similar Questions
A square wire loop, of side a has a long straight wire carrying a constant current i that passes through the centre of the loop and perpendicular to its plane as shown in Fig.
The current induced in the square loop is
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