A conducting ring is placed around the core of an electromagnet as shown in fig. qhen key `K` is pressed, the ring

As shown in fig. a conducting ring R is placed on the axis of a bar magnet M. The plane of R is perpendicular to the axis M can move along this axis _____

A conducting ring is placed near a solenoid as shown in Fig.3.21. Find the direction of the induced current in the ring. (a) At the instant the switch in the circuit containing the solenoid is closed. (b) After the switch has been closed for a long time. (c) At the instant the switch is opened.

A conducting ring is placed near a solenoid as shown in Fig.3.21. Find the direction of the induced current in the ring. (a) At the instant the switch in the circuit containing the solenoid is closed. (b) After the switch has been closed for a long time. (c) At the instant the switch is opened.

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 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

Figure shows a powerful electromagnet arrangement. A copper ring, which is free to move, is placed on the projecting part of the core as shown. When the key is inserted, the ring

Figure shows a powerful electromagnet arrangement. A copper ring, which is free to move, is placed on the projecting part of the core as shown. When the key is inserted, the ring

A conducting light string is wound on the rim of a metal ring of radius r and mass m . The free end of the string is fixed to the ceiling. A vertical infinite smooth conducting plane is always tangent to the ring as shown in the figure. A uniform magnetic field Bis applied perpendicular to the plane of the ring. The ring is always inside the magnetic field. The plane and the strip are connected by a resistance R . When the ring is released, find a. the curent in the resistance R as as function of time. b. the terminal velocity of the ring.

A conducting light string is wound on the rim of a metal ring of radius r and mass m . The free end of the string is fixed to the ceiling. A vertical infinite smooth conducting plane is always tangent to the ring as shown in the figure. A uniform magnetic field Bis applied perpendicular to the plane of the ring. The ring is always inside the magnetic field. The plane and the strip are connected by a resistance R . When the ring is released, find a. the curent in the resistance R as as function of time. b. the terminal velocity of the ring.