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A magnetic wire magnetic moment M is ben...

A magnetic wire magnetic moment M is bent into a shape with all segments of equal length the new magnetic moment is

A

`(M)/(5)`

B

`sqrt(5M)`

C

`(M)/sqrt(5)`

D

5M

Text Solution

Verified by Experts

The correct Answer is:
C
M of each part=`(M)/(sqrt(5))`
Magnetic length = `sqrt(((4l)/(5))^(2)+((2l)/(sqrt(5)))^(2))=(2l)/sqrt(5)`
Magnetic moment=`mxx(2l)/(sqrt(5))=(M)/(sqrt(5)`
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