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Question

Two short magnets of magnetic moment 1000 Am2 are placed as shown at the corners of a square of side 10 cm. The net magnetic induction at P is
1077430_2024e1651e8f4ec8a408b1eb92f17593.png

A
0.1 T
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B
0.2 T
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C
0.3 T
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D
0.4 T
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Solution

The correct option is A 0.1 T

Magnetic Induction at P due to magnet M BM=μ04π2Md3 (at axial point)

Magnetic Induction at P due to magnet N BN=μ04πMd3 (at equatorial point)

Net magnetic induction at P

=BMBN

=μ04πd3M

=107×1000(0.1)3

=0.1T


1016743_1077430_ans_d401d10ae5584de6adf230eb8f796eb4.png

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