An alternating e.m.f. is given as $e = e_0 \sin \omega t$. In what time will the e.m.f. have half its maximum value if $e$ starts from zero?
$(T = \text{time period}, \sin 30^{\circ} = \cos 60^{\circ} = 0.5)$
$(T = \text{time period}, \sin 30^{\circ} = \cos 60^{\circ} = 0.5)$
- A$\frac{T}{12}$
- B$\frac{T}{8}$
- C$\frac{T}{16}$
- D$\frac{T}{4}$
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