The magnetic moment of a magnet `(15cmxx2cmxx1cm) is 1.2A-m^(2)`. Calculate its intensity of magnetisation
A. `3xx10^(4) A//m`
B. `4xx 10^(4) A//m`
C. `3 xx 10^(-4) A//m`
D. `4 xx 10^(-4) A//m`

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1 Answers

Correct Answer - B
`M=1.2Am^(2),I=?`
`I=(M)/(V)=(1.2)/(15xx2xx1xx10^(-6))`
`=4xx10^(4)A//m`

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