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

Options

A. 6.28 V
B. 3.44 V
C. 10V
D. 1.32 V

Answer

A

Explanation

Given ,
Number of turns in circular coil = 100
Area ` ( A) = 2 xx 10 ^(-2) m^2`
Magnetic field (B ) = `0.01 T `
Frequuency of rotation (f) = 50 Hz
we know that ,
` e = NBA omega = NB A ( 2 pi f) `
` =100 xx 0.01 xx2xx10 ^(-2) xx 2 xx (22)/(7) xx50`
` = 6.28 V`