A 200Ω resistor is connected in series with a 5 (μ)F capacitor. The voltage across the resistor is VR = ( 1.20 V)cos ( 2500 rads−1)t. (a) Derive an expression for the circuit current. (b) Determine the capactive reactance of the capacitor. (c ) derive an experssion for the voltage across the capacitor.