A conducting metal circular-wire-loop of radius r is placed perpendicular to a magnetic field which varies with time as `B = B_0e^(-t//tau)`, where `B_0 and tau` are constants, at time = 0. If the resistance of the loop is R then the heat generated in the loop after a long time `(t to oo)` is :

A conducting loop of area A is placed in a magnetic field which varies sinusoidally with time as B=B_(0)sin

A circular loop of radius R is placed in the uniform magnetic field. The value of magnetic field changes is given by equation B=B_0 e^(-t/tau) . Where B_0 and tau are constants. The emf induced in the coil is ____

A circular brass loop of radius a and resistance R is placed with it plane perpendicular to a magnetic field, which varies with time as B = B_(0) sin omega t . Obtain the expression for the induced current in the loop.

A circular brass loop of radius a and resistance R is placed with its plane perpendicular to the magnetic field which varies with time as B=B_0 sin omegat . Obtain an expression for the induced current in the loop.

A stationary circular loop of radius a is located in a magnetic field which varies with time from t = 0 to t = T according to law B = B_(0) t(T - t) . If plane of loop is normal to the direction of field and resistance of the loop is R, calculate amount of heat generated in the loop during this interval.

A stationary circular loop of radius a is located in a magnetic field which varies with time from t = 0 to t = T according to law B = B_(0) t(T - t) . If plane of loop is normal to the direction of field and resistance of the loop is R, calculate amount of heat generated in the loop during this interval.

A circular loop of metal wire of radius r is placed perpendicular to uniform magnetic field B. Half of the loop is folded about the diameter with constant angular velocity omega . If resistance of the loop is R then current in the loop is

A stationary circular loop of radius a is located in a magnetic field which varies with time from t = 0 to t = T according to law B = B_(0) t(T - t) . If plane of loop is normal to the direction of field and resistance of the loop is R, calculate magnitude of charge flown through the loop from instant t = 0 to the instant when current reverses its direction.

A stationary circular loop of radius a is located in a magnetic field which varies with time from t = 0 to t = T according to law B = B_(0) t(T - t) . If plane of loop is normal to the direction of field and resistance of the loop is R, calculate magnitude of charge flown through the loop from instant t = 0 to the instant when current reverses its direction.

A loop of wire enclosing an area S is placed in a region where the magnetic field is perpendicular to the plane. The magnetic field B varies with time according to the expression B=B_0e^(-at) where a is some constant. That is, at t= 0 . The field is B_0 and for t gt 0 , the field decreases exponentially. Find the induced emf in the loop as a function of time.