A particle carrying a charge equal to `100` times the charge on an electron is rotating per second in a circular path of radius `0.8 metre`. The value of the magnetic field produced at the centre will be (`mu_(0)=` permeability for vacuum)

Options

A. `10^(-3) mu_(0)`
B. `10^(-11) mu _(0)`
C. `10^(-7)mu_(0)`
D. `10^(-17)mu_(0)`

Answer

D

Explanation

A revolving charge is equivalent to a current carrying coil, The current = charge `xx` frequency
`thereforeI =100xxe xx1 =100e " "[because I = Q/T=nQ]`
`therefore B = (mu_(0)I)/(2E) =(mu_(0) xx100xx1.6 xx10^(-19))/(2xx0.8)`
`therefore B = 10^(-17)mu_(0)`