A conducting ring of radius r and resistance R is placed in region of uniform time varying magnetic field B which is perpendicular to the plane of the ring. It the magnetic field is changing at a rate `alpha`, then the current induced in the ring is

The figure shows a conducting ring of radius R . A uniform steady magnetic field B lies perpendicular to the plane of the ring a circular region r (lt R) . If the resistance per unit length of the ring is lamda , then the current induced in the ring when its radius gets doubled is

The figure shows a conducting ring of radius R . A uniform steady magnetic field B lies perpendicular to the plane of the ring a circular region r (lt R) . If the resistance per unit length of the ring is lamda , then the current induced in the ring when its radius gets doubled is

the uniform magnetic field perpendicular to the plane of a conducting ring of radius a change at the rate of alpha , then

A vertical conducting ring of radius R falls vertically with a speed V in a horizontal uniform magnetic field B which is perpendicular to the plane of the ring. Which of the following statements is correct?

A vertical conducting ring of radius R falls vertically with a speed V in a horizontal uniform magnetic field B which is perpendicular to the plane of the ring. Which of the following statements is correct?

the uniform magnetic field perpendicualr to the plane of a conducting ring of radius a change at the rate of alpha , then

the uniform magnetic field perpendicualr to the plane of a conducting ring of radius a change at the rate of alpha , then

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

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