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An alternating emf of frequency f = 50 H...

An alternating emf of frequency `f = 50 Hz` peak voltage `V_(0) = 21` volt is applied to a series circuit of resistance `R = 20` ohm, an inductance `L = 100 mH` and a capacitor of `C = 30 mu F`.
(a) The maximum currentd is `3 A`
The phase difference between current and applied voltage is `75^(@)`
(c ) The current `i` as a function of time `'t'` is `i = 3 sin (314 t + 75^(@))`

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