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
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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 0.01m^{2} 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 +10Âµ coulomb enters a uniform magnetic field parallel to its direction. What will happen to the charge?
12 docs366 tests

12 docs366 tests
