switch in position 1, the circuit will charge the inductor determine the thevenin equivalent circuit, the time constant (L/Rth) for the charge phase, and the v(t) and i(t) equations

A 500 nF capacitor is connected in series with a 100 kohm resistor and the circuit is connected to a 50V, d.c. supply. Calculate the initial value of current flowing, the value of current 150 ms after connection, the value of capacitor voltage 80 ms after connection, and the time after connection when the resistor voltage is 35 V.

The current through a 50 mH inductor is given below. Use Ohm’s Law to find the voltage. Convert to polar form, find the impedance and complete the math, then convert back to the waveform at i1 = 7.5sin(2500t – 20°) mA and i2 = 5.9sin(200t + 40°) mA

The current through a 25-mH inductor is 10e t/2 A. Find the voltage at t = 3 s. Enter your answer with the correct sign and in units of mV.