The bar magnet produces magnetic induction of `4xx10^(-5)T` at a point 10 cm from centre on the axis of magnet.The magnetic moment is

Question

The bar magnet produces magnetic induction of `4xx10^(-5)T` at a point 10 cm from centre on the axis of magnet.The magnetic moment is

The bar magnet produces magnetic induction of `4xx10^(-5)T` at a point 10 cm from centre on the axis of magnet.The magnetic moment is
A. `0.2Am^(2)`
B. `0.002Am^(2)`
C. `2Am^(2)`
D. `0.02Am^(2)`

Monjur Alahi

4 views

2025-01-04 04:42

1 Answers

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Salim Ahmed Kawsar · Accepted Answer · 2023-02-05T15:29:48+06:00

Salim Ahmed Kawsar

Correct Answer - A
`B=4xx10^(-5)T,r=10cm M=?`
`B=(mu_(0))/(4pi)(2M)/(r^(3))`
`4xx10^(-5)=(10^(-7)xx2xxM)/(10^(-3))`
`M=0.2Am^(2)`

4 views Answered 2023-02-05 15:29