A coil of 100 turns and area 200 `"cm"^(2)` is placed at right angles to a magnetic field of
`2 xx 10^(-2)"wb/m"^(2).` If the speed of rotation is 500 "rev/second", then what is
the maximum value of induced emf in the coil ?

Explanation

Number of turns = N= 100
A= 200 `"cm"^(2)=200 xx 10^(-4)m^(2)`
`A=2 xx10^(-2)m^(2)`
`B=2 xx 10^(-2)"wb/m"^(2)`
Frequency = v = 500 "rev/second"
Induced emf =e=?
`e_(maxi)` = NAB `omega sin theta`
`100 xx 2 xx 10^(-2)xx 2 xx 10^(-2)xx2 pi v `
`=4 xx 10^(-2)xx 2 xx 3.14 xx 500`
= 125.60 Volt
`e_(maxi)=125.6` volt