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A straight wire carrying current I is tu...

A straight wire carrying current I is turned into a circular loop. If the magnitude of magnetic moment associated with it is M, is the length of wire will be

A

`(4pi)/(M)`

B

`sqrt((4pi M)/(i))`

C

`sqrt((4pi i)/(M))`

D

`(Mpi)/(4i)`

Text Solution

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The correct Answer is:
B
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AAKASH INSTITUTE ENGLISH-MOVING CHARGES AND MAGNETISM-Assignment (Section A) Objective Type Questions (One option is correct)
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  9. The force between two parallel conductor, each of length 50m and dista...

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  10. A circular wire ABC and a straight conductor ADC are carrying current ...

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  11. The magnetic moment of a current I carrying circular coil of radius r ...

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  12. Two galvanometers A and B require 3 mA and 6 mA respectively, to produ...

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  13. Magnetic dipole moment of rectangular loop is

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  14. Magnetic induction produced at the centre of a circular loop carrying ...

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  15. A straight wire carrying current I is turned into a circular loop. If ...

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  16. The current sensitivity of a moving coil galvanometer can be increased...

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  17. A rectangular coil 20cmxx20cm has 100 turns and carries a current of 1...

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  18. A wire of length l in formed into a circular loop of one turn only and...

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  19. A wire fo length l is bent in the from of a circular coil of some tur...

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  20. The restoring couple in the moving coil galvanometer is due to

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