3. A resistor and capacitor are connected in series across an ac generator. The emf of the generator is given by v(t)=V0coswt, where V0=120V, m=120nrad/s, R=4OOQ , and C=4.0|J.F . (a) What is the impedance of the circuit? (b) What is the amplitude of the current through the resistor? (c) What is the amplitude of the voltage across the resistor? (d) What is the amplitude of the voltage across the capacitor