1.

Two shortbar magnets of magnetic moment M each are arranged at the opposite corners of a square of sided such that their centrecoincide withthecorners same directio the magneticinducition at any of theother corner of the squre is

Answer»

`(mu_(0))/(4pi)(m)/(d^(3))`
`(mu_(0))/(4pi)(msqrt(2))/(d^(3))`
`(mu_(0))/(4pi)(msqrt(5))/(d^(3))`
`(mu_(0))/(4pi).(3m)/(d^(3))`

SOLUTION :Magnetic field at Zon equationrial line at a DISTANCE from center of shortmagnet at corner
`Z.B_(2)(mu_(0))/(4pi)(M)/(d^(3))`
`because` like polesarein same DIRECTION so netmagnetic field`Z(B)=B_(1)-B_(2)=(mu_(0))/(4pi)(M)/(d^(3))`


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