Working of a tesla coil

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Q. The magnetic field in a coil of

100

turns and

40

square cm area is increased from

1

Tesla to

6

Tesla in

2

second. The magnetic field is perpendicular to the coil. The e.m.f. generated in it is

Q. A circular coil having N turns is made from a wire L meter long. If a current of I ampere is passed through this coil suspended in a uniform magnetic field of B tesla, find the maximum torque that can act on this coil.

Q. A coil of area 0.01 m

^{2}

is lying in a perpendicular magnetic field of 0.1 Tesla. If a current of 10 A is passed in it then the maximum torque acting on the coil will be

A rectangular coil of $20$ turns and area of cross section $25 s q . c m$ has a resistance of $100 o h m$ . If a magnetic field which is perpendicular to the plane of the coil changes at a rate of $1000 t e s l a p e r s e c$ , the current in the coil is:

Q. A number of turns in a generator coil are

10

. The area of this coil is

4 \times 10^{- 2} m^{2}

. This coil is rotating at the rate of

20

rotations/sec, about an axis lying in its own plane in a perpendicular magnetic field of

0.3

Tesla. The maximum emf induced in the coil will be :

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