Home
Class 12
PHYSICS
A circular copper ring of radius r trans...

A circular copper ring of radius r translates in its plane with a constant velocity v. A uniform magnetic field B exists in the space in a direction perpendicular of the plane o the ring. Consider different pairs of diametrically opposite points on the ring. (a) Between which pair of points is the emf? (b) Between which pair of points is the emf minimum? What is the value of this minimum emf?

Text Solution

Verified by Experts

The correct Answer is:
(a) At the ends of the diameter perpendicular to the velocity, 2rvB
(b) At the ends of the diameter parallel to the velocity, zero
Promotional Banner

Similar Questions

Explore conceptually related problems

A ring of radius 2m translates in its plane with a constant velocity 5m//s . A uniform magnetic field 0.1 T exists in the space in a direction perpendicular to the plane of the ring. Consider different pairs of diametrically opposite points on the ring. (i) Between which pair of points is emf maximum? What is the value of this maximum emf? (ii) Between which pair of points is the emf minimum? What is the value of this minimum emf?

A copper wire bent in the shape of a semicircle of radius r translates in its plane with a constant velocity v. A uniform magnetic field B exists in the direction perpendicular to the plane of the wire. Find the emf induced between the ends of the wire if (a) the velocity is perpendicular ot the diameter joining free ends, (b) the velocity is parallel to this diameter.

A ring of radius R is rolling on a horizontal plane with constant velocity v. There is a constant and uniform magnetic field B which is perpendicular to the plane of the ring. Emf across the lowest point A and right-most point C as shown in the figure will

A ring of radius R moves with a velocity v in a uniform static magnetic field B as shown in diagram. The emf between P and Q is

A conducting ring of radius r and resistance R rolls on a horizintal surface with constant velocity v . The magnetic field B is uniform and is normal to the plane of the loop. Choose the correct option.

A circular conducting ring of radius 'a' is rolling with slipping on a horizontal surface as shown. A uniform magnetic field B is existing perpendicular to the plane of motion of the ring. The emf iniduced between the points A and D of the ring is

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 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 semicircle conducting ring of radius R is placed in the xy plane, as shown in Fig. A uniform magnetic field is set up along the x-axis. No emf, will be induced in the ring if

A vertical conducting ring ogradius R falls vertically in a horizontal magnetic field of magnitude B . The direction of B is perpendicular to the plane of the ring. When the speed of the ring is v,