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Two short magnets of magnetic moment 100...

Two short magnets of magnetic moment `1000 Am^(2)` are placed as shown at the corners of a square of side `10 cm`. The net magnetic induction at P is

A

`0.1 T`

B

`0.2T`

C

`0.3T`

D

`0.4T`

Text Solution

Verified by Experts

The correct Answer is:
A
Point P lies on equatorial line of magnet (1) and axil line of magnet (2) as shown
`B_(1)=mu_(0)/(4pi).M/d^(3)=10^(-7)xx1000/((0.1)^(3))=0.1T`
`B_(2)=mu_(0)/(4pi).(2M)/d^(3)=10^(-7)xx(2xx1000)/((0.1)^(3))=0.2T`
`:. B_("net")=B_(2)-B_(1)=0.1T`
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Knowledge Check

  • A magnet of length 10 cm and magnetic moment 1Am^(2) is placed along the side of an equilateral triangle of the side AB of length 10 cm . The magnetic induction at third vetex C is

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