A magnetic field induction is changing in magnitude in a region at a constant rate `dB//dt`. A given mass `m` of copper drawn into a wire and formed into a loop is placed perpendicular to the field. If the values of specific resistance and density of copper are `rho` and `sigma` respectively, then the current in the loop is given by :

A magnetic field induction is changing in magnitude at a constant rate dB//dt . A given mass m of copper is drawn into a wire of radius alpha and formed into a loop of radius r is placed perpendicular to the field. Show that induced current in the loop is given by i=(m)/(4pipdelta)(dB)/(dt) p : resistivity, delta : density of copper.

A magnetic field induction is changing in magnitude at a constant rate dB//dt . A given mass m of copper is drawn into a wire into a wire of radius alpha and formed into a loop of radius r is placed perpendicular to the field. Show that induced current in the loop is given by i(m)/(4pipdelta)(dB)/(dt) p : resistivity, delta : density of copper.

An irregular shaped wire PQRS placed in a uniform magnetic field perpendicular to the plane of the paper changes into a circular shape. What will be the direction of the induced current in the loop.

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

If 50.0 cm of copper wire (diameter= 3.00 mm) is formed into a circular loop and placed perpendicular to a uniform magnetic field that is increasing at the constant rate of 30.0 mT/s, at what rate is thermal energy generated in the loop?

A rectangular copper coil is placed in a uniform magnetic field of induction 40 mT with its plane perpendicular to the field. The area of the coil is shrinking at a constant rate of 0.5m^(2)s^(-1) . The emf induced in the coil is

A rectangular copper coil is placed in a uniform magnetic field of induction 40 mT with its plane perpendicular to the field. The area of the coil is shrinking at a constant rate of 0.5m^(2)s^(-1) . The emf induced in the coil is

A rectangular loop carrying a current i is placed in a uniform magnetic field B. The area enclosed by the loop is A. If there are n turns in the loop, the torque acting on the loop is given by

A rectangular loop carrying a current i is placed in a uniform magnetic field B. The area enclosed by the loop is A. If there are n turns in the loop, the torque acting on the loop is given by