Correct Answer: Option D

Explanation

Period is the time to complete one cycle of 360^o
=> Periodic Time T ≡ 1 cycle of 360^o
∴ ^T/₄ = ³⁶⁰/₄ = 90^o
∴ Instantaneous e.m.f E = E^o sin ωt
= E^o sin 90
But sin 90 = 1: => E = E^o x 1
= E^o

There is an explanation video available below.

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