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A magnet of length 10 cm and magnetic mo...

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 vertex `C` is

A

`10^(-9)T`

B

`10^(-7)T`

C

`10^(-5)T`

D

`10^(-4)T`

Text Solution

Verified by Experts

The correct Answer is:
D
`B_(e)=mu_(0)/(4pi)(M)/x^(3)" where "x=sqrt(d^(2)+l^(2))`
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NARAYNA-MAGNETISM AND MATTER-EXERCISE - 1 (C.W)
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  2. The magnetic induction field strength at a distance 0.3 m on the axial...

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  3. A magnet of length 10 cm and magnetic moment 1Am^(2) is placed along t...

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  4. The length of a magnet of moment 5Am^(2) is 14cm. The magnetic inducti...

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  5. A pole of pole strength 80 Am is placed at a point at a distance 20cm ...

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  6. A short bar magnet produces manetic fields of equal induction at two p...

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  7. Two short bar magnets with magnetic moments 8Am^(2) and 27Am^(2) are p...

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  9. Two magnetic poles of pole strength 324 milli amp.m. and 400 milli amp...

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  10. With a standard rectangular bar magnet, the time period in the uniform...

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  12. Two bar magnets placed together in a vibration magnetometer take 3 sec...

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  13. A bar magnet of length 'I' breadth 'b' mass 'm' suspended horizontally...

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  14. The time period of a vibration magnetometer is T(0). Its magnet is rep...

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  15. A magnetic needle is kept in a uniform magnetic field of induction 0.5...

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  16. A magnet is suspended horizontally in the earth's field. The period of...

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  17. A magnet freely suspended makes 20 vibrations per minute at first plac...

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  18. A magnet has a dimensions of 25cmX10cmX5cm and pole strength of 200 mi...

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  19. The mass of iron rod is 110g, its magnetic moment is 20Am^(2). The den...

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