Magnetic field due to 0.1 A current flowing through a circular coil of radius 0.1 m and 1000 turns at the centre of the coil is

Options

A. `2xx 10^(-1) T`
B. `4.31 xx 10^(-2)T`
C. `6.28 xx 10^(-4)T`
D. `9.81 xx 10^(-4)T`

Answer

C

Explanation

`B = (mu_0 NI)/(2 R) = (4 pi xx 10^(-7) xx 1000 xx 0.1)/(2 xx 01) = 6.28 xx 10^(-4) T`