1. An AC circuit has a voltage source 9.00cos(wt) V. There is also a 440. ? resistor and a 3.10 nF capacitor in the circuit. What is the value of the peak voltages V_R and V_C if the emf frequency is 4.20 kHz?

V_R=

V_C=

2. The voltage and current graphs for an inductor are shown. The maximum voltage and minimum voltage have the same magnitude of 7.80 V. The maximum current and the minimum current have the same magnitude of 2.70 A. What is the inductance for this system?

Voltage 0.00 S 0.01 0.02 +-I Current