Alternating Current Set 2

What is the value of inductance L for which the current is a maximum in a series L-C-R circuit with and ?

A coil of resistance and inductance is connected to a battery of emf volt. The final current in the coil is

An alternating e.m.f. is applied to purely capacitive circuit. The phase relation between e.m.f. and current flowing in the circuit is or
In a circuit containing capacitance only

An ac source of variable frequency is connected to an series circuit. Which of the graphs in figure represents the variation of current in the circuit with frequency

A metal rod of resistance 20 is fixed along a diameter of a conducting ring of radius 0.1 m and lies on plane. There is a magnetic field = (50 T) . The ring rotates with an angular velocity about its axis. An external resistance of 10 is connected across the centre of the ring and rim. The current through external resistance is

In an L – C – R  series AC circuit, the voltage across each of the components. L, C and R is 50 V. The voltage across the L –  C combination will be

In an induction coil, the coefficient of mutual inductance is 4H. If current of 5A in the primary coil is cut off 1/ 1500s, the emf at the terminals of the secondary coil will be

The maximum value of AC voltage in a circuit is 707 V. Its rms value is

The phase difference between the current and voltage of circuit in series combination at resonance is

A fully charged capacitor C with initial charge is connected to a coil of self inductance L at t = 0. The time at which the energy is stored equally between the electric and the magnetic fields is