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An insulting thin rod of length has a x linear charge density p(x)=  on it. The rod is rotated about an axis passing through the origin (x=0) and the perpendicular to the rod. If the rod makes n rotations per second, then the time averaged magnetic moment of the rod is :

(a)

(b)

 

(c)

 

(d)

 


Question ID - 50238 | SaraNextGen Answer

An insulting thin rod of length has a x linear charge density p(x)=  on it. The rod is rotated about an axis passing through the origin (x=0) and the perpendicular to the rod. If the rod makes n rotations per second, then the time averaged magnetic moment of the rod is :

(a)

(b)

 

(c)

 

(d)

 

1 Answer - 5876 Votes

3537

Answer Key : (a) -

\because M = NIA

dq=

dx.

M= . .dx = .

M=  or



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