A coil of inductanece `5H` is joined to a cell of emf `6V` through a resistance `10 Omega` at time t=0. The emf across the coil at time `t=ln sqrt(2)` s is:

At t=0 , an inductor of zero resistance is joined to a cell of emf varepsilon through a resistance. The current increases with a time constant tau . The emf across the coil after time t is

At t=0, an inductor of zero resistance is joined to a cell of emf epsilon through a resistance. The current increases with a time constant tau . After what time will the potential difference across the coil be equal to that across the resistance ?

A cell of emf 2.2V sends a current of 0.2A through a resistance of 10 Omega . The internal resistance of the cell 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 time constant of the circuit

An inductor coil stores 16 joules of energy and dissipates energy as heat at the rate of 320 W when a current of 2 Amp is passed through it. When the coil is joined across a battery of emf 20V and internal resistance 20Omega the time constant for the circuit is tau . Find 100tau ( in seconds).

An inductor coil stores 16 joules of energy and dissipates energy as heat at the rate of 320 W when a current of 2 Amp is passed through it. When the coil is joined across a battery of emf 20V and internal resistance 20Omega the time constant for the circuit is tau . Find 100tau ( in seconds).

A coil of inductance 1 H and resistance 10Omega is connected to a resistanceless battery of emf 50 V at time t=0 . Calculate the ratio of rthe rate which magnetic energy is stored in the coil to the rate at which energy is supplied by the battery at t=0.1s .