A) unchanged
B) four times
C) two times
D) half
Correct Answer: C
Solution :
According to Faradays law induced emf\[e=0.5\] \[B\omega R\]or \[\Rightarrow \] \[e\propto \omega \] Here\[\omega \]is the angular velocity of dynamo armature. Hence, if the angular velocity of a dynamo armature is doubled, then the induced emf will be doubled.You need to login to perform this action.
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