Shown in the figure is a circular loop of radius `r` and resistance `R`. A varible magnetic field of induction `B=B_(0)e^(-1)` is established inside the coil. If the key `(K)` is closed, the electrical power devloped right after closing the switch is equal to

Shown in the figure is a circular loop of radius r and resistance R. A variable magnetic field of induction B=B_(0)e^(-t) is established inside the coil. If the key (K) is closed, the electric power developed right after closing the switch is equal to:-

Shown in the figure is a circular loop of radius, r and resistance R. A variable magnetic field of induction B=e^(-t) is established inside the coil. If the key (K) is closed at t=0 , the electrical power developed at the instant is equal to

In the figure a circular loop of radius r and resistance R is shown. A variable magnetic field of induction B=e^(-t) exists inside the loop. If the key (K) is closed at t = 0, the electrical power developed in the circuit at that instant is equal to

Shown in the figure is an R-L circuit. Just after the key (K) is closed

Shown in the figure is an R-L circuit. Just after the key (K) is closed

A circular coil of radius r and of negligible resistance is connected to a resistor of resistor R through is connected to a resistor of resistance R rough a key. A time varying magnetic field B(t) = Be^-t established inside the coil. After a time t of closing key, the power dissipated across the resistor.

As shown in the figure, the key K is closed, the direction of the induced current in the coil B will be -

A conducting circular loop of radius a and resistance R is kept on a horizontal plane. A vertical time varying magnetic field B=2t is switched on at time t=0. Then

A circular coil of radius r and of negligible resistance is connected to a resistor of resistor R through is connected to a resistor of resistance R rough a key. A time varying magnetic field B(t) = Be^-t established inside the coil. After a time t of closing key, find the induced current in the circuit

Magnetic field at the centre of circular loop of radius R is B. Magnetic moment of this coil would be _______