PhysicsMedium55×since 2003Q6686The time taken for the magnetic energy to reach 25% of its maximum value, when a solenoid of resistance R, inductance L is connected to a battery, is :AinfiniteBLR{L \over R}RL ln10CLR{L \over R}RL ln2DLR{L \over R}RL ln5Check answerSkip