A closed circuit consits of a source of constant and `E` and a choke coil of inductance `L` connected in series. The active resistance of the whole circuit is equal to `R`. At the moment `t = 0` the choke coil inductance was decreased abrupty `eta` times. FInd the current in the circuit as a function of time `t`.

A closed circuit consists of a source of constant emf E and a choke coil of inductance L connected in series.The active resistance of the whole circuit is equal to R .It is in steady state.At the moment L=0 the choke coil inductance was decreased abruptly 4 times.The current in the circuit as a function of time t is E/R[1-xc^(-4tR//L)] .Find out value of x .

A closed circuit consists of a source of constant emf E and a choke coil of inductance L connected in series.The active resistance of the whole circuit is equal to R .It is in steady state.At the moment L=0 the choke coil inductance was decreased abruptly 4 times.The current in the circuit as a function of time t is E/R[1-xc^(-4tR//L)] .Find out value of x .

A circuit consists of a source of a constant emf xi and a resistance R amd a capacitor with capacitance C connected in series. The internal resistance of the source is negligible. At a moment t = 0 the capacitance of the capacitor is abruply decreased eta -fold. FInd the current flowing through the circuit as a function of time t .

Write a note on induction coil and choke coil.

An oscillating circuit consists of a capacitor with capacitance C , a coil of inductance L with negligible resistance, and aswitch. With the switch disconnected , the capacitor was charged to a voltage V_(m) and then at the moment t=0 the switch was closed . Find : (a) the current (I(t)) in the circuit as a function of time, (b) the emf of self- inductance in the coil at the moments when the electric energy of the capacitor is equal to that of the current in the coil.

A coil with active resistance R and inductance L was connected at the moment t=0 to a source of voltage V=V_(m)cos omegat. Find the current in the coil as a function of time t .

A circuit consisting of a capacitor with capacitance C and a resistance R connected in series was connected at the moment t=0 to a source of ac voltage V=V_(m) cos omegat . Find the current in the circuit as a function of time t .

The coil of choke in a circuit