HCV problem.Aakash sir plz help.

JEE Mains Papers › Electricity and magnetism questions › HCV problem.Aakash sir plz help.

A circular loop of radius R carries a current I.Another circular loop of radius r(<<R) carries a current i and is placed at the centre of the larger loop.The planes of the two circles are at right angle to each other.Find the torque acting on the smaller loop

#Physics #Electricity and magnetism #Electrostatics

UP 0 DOWN 0 0 2
Post on FacebookPost anonymously?

2 Answers

187

Swastik Haldar ·2014-08-04 10:11:58

I approached the sum in this way.
since the second circular loop is very small, we can assume it to be a point in the centre of the first loop. magnetic field due to first loop at the centre can be calculated. now using the result for finding the torque, i.e. ( dipole moment x B) I got the answer.