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what is the work done by a bar magnet on another bar magnet in displacing through a distance d? assume whatever have to suppose such as their magnetic field B1 & b2 etc.

Padma Bhushan Borah , 14 Years ago
Grade 12
anser 1 Answers
SAGAR SINGH - IIT DELHI

Last Activity: 14 Years ago

Dear student.

Your query has been answered...

Force between two magnetic charges is given by F= km1m2/r2             

here k is constant  whose value is u/4pi,m1,m1 are magnitudes of magnetic moment of bar magnet..

if two magnetic charges of same polarity means north towards north are placed then they repel by F amount of force ...

now work done in moving a magnetic charge m is F.dr

  W=F.dr

   W =Fdrcos@ or Fdr   

if force is in the direction of displacement

  W =-km1m2/r ........

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