A chock coil has an inductance of `4H` and a resistance of `2 Omega`. It is connected to a battery of `12 V` and negaligible internal resistance. The time taken for the current to become `3.78 A` is nearly

A coil of self inductance 2.5 H and resistance 20 Omega is connected to a battery of emf 120 V having internal resistance of 5 Omega . Find : The time constant of the circuit

An inductance of 2 H and resistance of 10 Omega are connected to a battery of 5 V. the time constant of the circuits is:

An inductance of 2 H and resistance of 10 Omega are connected to a battery of 5 V. the time constant of the circuits is:

A coil of self inductance 2.5 H and resistance 20 Omega is connected to a battery of emf 120 V having internal resistance of 5 Omega . Find : The current in the circuit in steady state.

Shows a network of eight resistors battery of resistance R(= 2 Omega) connected in a 3V battery of negligible internal resistance. The current I in the circuit is

A coil has an inductance of 2.5 H and a resistance of 0.5Omega . If the coil is suddenly connected across a 6.0 volt battery, then the time required for the current to rise 0.63 of its final value is

A coil of self inductance 10 mH and resistance 0.1 Omega is connected through a switch battery of internal resistance 0.9Omega after the switch is closed, the time taken for the current to attain 80% of the saturation value is [taken ln5=1.6 ]

A coil of inductance 8.4 mH and resistance 6 (Omega) is connected to a 12 V battery. The current in the coil is 1.0 A at approximately the time

A coil of inductance 8.4 mH and resistance 6 (Omega) is connected to a 12 V battery. The current in the coil is 1.0 A at approximately the time