When an alternating emf e = 310 sin (100...

When an alternating emf e = 310 sin `(100pit)` V is applied to a series LCR circuit, current flowing through the circuit can be given by `i=5sin(100pit+pi//3)A`.
(1) What is the phase difference between the current and the emf ?
(2) Calculate the average power consumed by the circuit.

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