A magnetic field of flux density 10 T ac...

A magnetic field of flux density 10 T acts normal to a coil of 50 turns having `20 cm^(2)` area. Find emf induced if the coil is removed from the magnetic field in 0.1 sec.

Text Solution

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Here, `B_(1) = 10 T, theta = 0^(@), N = 50`,
`A = 50 cm^(2) = 50 xx 10^(-4) m^(2), e = ?`
`B_(2) - 0, dt = 0.1 s`
`e = (-(phi_(2) - phi_(1)))/(dt) = (-(0 - NB_(1) A cos 0^(@)))/(dt)`
`= (50 xx 10 xx 50 xx 10^(-4) xx 1)/(0.1) = 25 V`

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