A series RC circuit has a resistance of 15 kΩ and a capacitance of 0.02 μF and a steady voltage of 30 V is connected to the circuit. Determine, the voltage across the resistor (a) initially, (b) after...

A series RC circuit has a resistance of 15 kΩ and a capacitance of 0.02 μF and a steady voltage of 30 V is connected to the circuit. Determine, the voltage across the resistor (a) initially, (b) after 0.3 ms, (c) after 1 ms.

A 16 μF capacitor is charged to 10 V and then discharged through a resistance of 50 kΩ. Determine (a) the time taken for the voltage across the capacitor to drop to 2 V, (b) the circuit current after 0.5 s.