A variable inductor is connected to an AC source. When inductance increases, Then reactance

Reading shown by the hot wire voltmeter used in the circuit here is

In the following circuit, there are two branches. One branch consists of a resistor and capacitor. The other branch consists of resistance and inductor. Find condition such that
(a) Phase difference between voltage and current in two branches is the same.
(b) Magnitude of current in the two branches is the same.
(c) Total current is in phase with the total voltage.

Power factor of the circuit shown here is

Find average power loss in the following RLC circuit.

Switch is in position $A$ for a long time. At time $0$, it is switched to position $B.$ Find the maximum charge which will accumulate on capacitor.