Determine the current after 0.4 s when a voltage of 10 V is applied to a coil of resistance 25 Ω and inductance 5 H. A series RL circuit has a DC voltage of 10 V applied to a resistance of 125 Ω and...

Determine the current after 0.4 s when a voltage of 10 V is applied to a coil of resistance 25 Ω and inductance 5 H.

A series RL circuit has a DC voltage of 10 V applied to a resistance of 125 Ω and an inductance of 0.25 H. Determine (i) graphically by a step-by-step method, (ii) algebraically, the circuit current after 5 ms.