An inductor of negligible resistance and an inductance of 0.2 H isconnected in series with a 330 O resistor to a 12V d.c. supply.Determine:(a) the time constant of the circuit(b) the voltage drop across the inductor after two time constants(c) the voltage drop across the resistor after three time constants(d) the resistance of a 0.2 H coil used to replace the inductor if thecircuit's time constant falls to 0.55 ms.