Home
Class 12
PHYSICS
A generator with a circular coil of ...

A generator with a circular coil of 100 turns of area ` 2xx 10 ^(-2) m ^2` is immersed in a 0.01 T magnetic field and rotated at a frequency of 50 Hz . The maximum emf which is prodiuced during a cycle is

A

6.28V

B

3.44V

C

10V

D

1.32V

Text Solution

Verified by Experts

The correct Answer is:
A
Answer(1) Maximum emf, `e_@ = NBA omega` N = 100
`A = 2 xx 10^-2 m^2` .
B = 0.01 T.
f = 50 Hz .
`omega = 2pif = 2pi(50) = 100pi` .
`e_@ = (100) (0.01) (2 xx 10^-2) (100pi`) .
`therefore = e_@ = 6.28V`.
Promotional Banner

Topper's Solved these Questions

  • RAY OPTICS

    SIA PUBLICATION|Exercise M.C.Q|72 Videos

  • SEMICONDUCTOR ELECTRONICS

    SIA PUBLICATION|Exercise MCQ|90 Videos

Similar Questions

Explore conceptually related problems

A circular coil of area 0.1 m^(2) having 200 turns is placed in a magnetic field of 40 T. The plane of the coil makes 30^(@) with the field. If the field is removed for 0.1 s then the induced emf in the coil is

A circular coil of 500 turns of wire has an enclosed area of 0.1 m^(2) per turn. It is kept perpendicular to a magnetic field of induction 0.27 and rotated by 180^(@) about a diameter perpendicular to the field in 0.1 s. How much charge will pass when the coil is connected to a galvanometer with a combined resistance of 50 Omega .

A rectangular coil of 300 turns has an area of 25 cm x 10 cm. The coil rotates with a speed of 50 cps in a uniform magnetic field of strength 4 xx 10^(-2)T about an axis perpendicular to the field. The peak value of the induced e.m.f is (in volt)

A coil of 800 turns and 50 cm^(2) area makes 10 rps about an axis in its own plane in a magnetic field of 100 gauss perpendicular to this axis. What is the instantaneous induced emf in the coil?