A coil of infucatance 0.2 mH and resistance ` 0.1 Omega` is connected to a cell of emf 1.5 V . Calculte (i) time constant of the circul, (ii) time in which current grow to 10 A. Also calculate the total energy stored in the core .

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.

A 20 mH coil is connected in series with a 2 k Omega resistor and a 12 V battery. Calcualte (i) time constant of the circuit, (ii) time during which current decrys to 10% of its maximum value.

A coil o finductanc e 8.4mH and resistance 6Omega is connected to a 12V battery. The current in the coil is 1.0A in the time (approx .)

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 .

A coil of inductance 1.0 H and resistance 100 ohm is connected to a battery of emf 12 V. Find the energy stored in the magnetic field of the coil 10 ms after the circuit is switched on.