An ac generator produces emf = sin (w d t /4), where m

An ac generator produces emf ξ = ξ sin (w d t – π/4), where ξ m = 30.0 V and w d = 350 rad/s.

The current in the circuit attached to the generator is i(r) = I sin (w d t + π/4), where I = 620 mA.

(a) At what time after t = 0 does the generator emf first reach a maximum?

(b) At what time after t = 0 does the current first reach a maximum?

(c) The circuit contains a single element other than the generator. Is it a capacitor, an inductor, or a resistor? Justify your answer.

(d) What is the value of the capacitance, inductance or resistance, as the case may be?