Magnetic Materi...

A device which converts electrical energy into mechanical energy is called:​

A conductor of length l, carrying current I and placed in a magnetic field B experiences a force F given by

A wire 40 cm long carries a current of 20 A. It is bent into a loop and placed with its plane perpendicular to a magnetic field having a flux density of 0.52 T. What is the torque on the loop if it is bent into a square.​

A charge moves through a magnetic field with a certain velocity. Direction of force can be obtained by applying :

A plane square loop PQRS of side ‘a ’made of thin copper wire has ‘n ’turns and it carries a direct current ‘I ’ampere in the direction shown in the adjoining figure. This wire loop is placed in a magnetic field of flux density ‘B ’tesla, which is directed perpendicularly in to the plane of the loop. What is the torque acting on the loop?

Torque on a current loop is by = n( x ). With ishere?

A wire of length l, carrying current is bent into a loop and placed with its plane perpendicular to a magnetic field. In which of the following shapes, is the torque acting on the loop maximum?

A current loop of area 0.01m²  and carrying a current of 100 A is held parallel to a magnetic field of intensity 0.1 tesla. The torque in Nm acting on the loop is:

A coil in the shape of an equilateral triangle of side 1 is suspended between the pole pieces of a permanent magnet such that  B  is in the plane of the coil. If due to current  i  in the triangle, a torque  τ acts on it. The side  l  of the triangle is

A charge of +10 µcoulomb enters a uniform magnetic field parallel to its direction. What will happen to the charge?​