A coil of 1000 turns is wound on a book and this book is lying on the table. The vertical component of the earth's magnetic field is `0.6xx10^(-4)`T and the area of the coil is `0.05 m^(2)`. The book is turned over once about a horizontal axis is 0.1 s. this average emf induced in the coil is

Options

A. 0.03 V
B. 0.06 V
C. zero
D. 0.6 V

Answer

B

Explanation

`e=(-d phi)/(dt)=(-NBA(cos0^(@)-cos180^(@)))/(dt)`
`=(2NBA)/(dt)`
`=(2xx1000xx0.6xx10^(-4)xx0.05)/(0.1)`
`e=0.06V`