The peak value of an alternating emf \( E \) given by \( E=E_{0} \cos \omega t \) is \( 10 \math...

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The peak value of an alternating emf \( E \) given by \( E=E_{0} \cos \omega t \) is \( 10 \mathrm{~V} \) and its frequency is \( 50 \mathrm{~Hz} \). At
\( \mathrm{P} \)
time \( t=\frac{1}{600} \mathrm{~s} \), the instantaneous emf is:
W
(1) \( 5 \sqrt{3} \mathrm{~V} \)
(2) \( 5 \mathrm{~V} \)
(3) \( 10 \mathrm{~V} \)
(4) \( 1 \mathrm{~V} \)
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