Question

A rod of ferromegnetic materical with dimensions `10cmxx0.5cmxx2cm` is placed in a magnetising field of intensity `2xx10^(5)A//m`. The magnetic moment produced due it is `6` `amop-m^(2)`. The value of magnetic induction will be------`10^(-2)T`.
A. `100.48`
B. `200.28`
C. `50.24`
D. `300.48`

Answer 1

Correct Answer - A
`i=(M)/(V)=(6)/(10xx0.5xx2xx10^(-6))`
`H=2xx10^(5)A//M`
`B=mu_(0)(H+I)`