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The voltage of an AC source varies with time according to the relation: ` E = 120 sin 100 pi t cos 100 pi t V`. What is the peak voltage of the source

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The voltage of an AC source varies with time according to the relation: ` E = 120 sin 100 pi t cos 100 pi t V`. What is the peak voltage of the source?
A. `60` volt `100` Hz
B. `(120)/(sqrt(2))` volt, `100` Hz
C. `120` volt, `100` Hz
D. `60` volt, `200` Hz
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Correct Answer - A
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