A planar loop of wire rotates in a uniform magnetic field.Initially at t=0,the plane,of the loop is perpendicular to the magnetic field.If it rotates with a period of 10s, about an axis in its plane then,the magnitude of induced emf will be maximum and,minimum,respectively at-

A metallic loop is placed in a nonuiform magnetic field. Will an emf be induced in the loop?

A circular wire loop of radius r lies in a uniform magnetic field B, with its plane perpendicular to magnetic field. If the loop is deformed to a square shape in the same plane in time t, the emf induced in the loop is

A ring is rotated about diametric axis in a uniform magnetic field perpendicular to the plane of the ring. If initially the plane of the ring is perpendicular to the magnetic field. Find the instant of time at which EMF will be maximum & minimum respectively. (Figure: )

A wire loop is rotated in a uniform magnetic field about an an axis perpendicular to the field. The direction of the current induced in the loop reverses once each

A rectangular coil of area A rotates in a uniform magnetic field B with angular velocity about an axis perpendicular to the field, initially the plane of coil is perpendicular to the field,then the average induced e.m.f. after rotating by 90° is

In the figure shown a semicircular wire loop is placed in a uniform magnetic field B=1.0T . The plane of the loop is perpendicular to the magnetic field. Current i=2A flows in the loop in the directions shown. Find the magnitude of the magnetic force in both the cases a and b . The radius of the loop is 1.0 m

A conducting circular loop is placed in a magnetic field of strength 0.04 T, such that the plane of the loop is perpendicular to the magnetic field. If the radius of the loop begins to shrink at a constant rate of 0.5 mm // s , then calculate the emf induced in the loop when its radius is 1.5 cm.

A circular loop is kept perpendicular to a uniform magnetic field. Loop is rotated about its diameter with constant angular velocity.

A conducting ring is placed in a uniform magnetic field with its plane perpendicular to the field . An emf is induced in the ring if