The current flowing through an ac circuit is given by I = 5 sin(120$\pi$t)A How long will the current take to reach the peak value starting from zero?

Question

The current flowing through an ac circuit is given by

I = 5 sin(120$\pi$t)A

How long will the current take to reach the peak value starting from zero?

${1 \over {60}}$ s

60 s

${1 \over {120}}$ s

${1 \over {240}}$ s

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