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A magnetic pole of strength 4 Am is move...

A magnetic pole of strength 4 Am is moved twice around a long straight wire carrying a current of 3A. The work done is

A

`96pixx10^(-7)J`

B

`48pixx10^(-7)J`

C

`108pixx10^(-7)J`

D

zero

Text Solution

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The correct Answer is:
A
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AAKASH SERIES-MOVING CHARGES AND MAGNETISM-EXERCISE-II
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  2. The magnetic induction field at the centroid or an equilateral triangl...

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  3. A magnetic pole of strength 4 Am is moved twice around a long straight...

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  5. The length of a solenoid is 0.1 m and its diameter is very small. A wi...

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  6. A long solenoid has 200 turns per cm and carries a current i. The magn...

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  7. The magnetic induction at the centre of a solenoid is B. If the length...

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  8. A solenoid of 0.4111 length with 500 turns carries a current of 3A. A ...

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  9. The perpendicular distance between two conductor of 12 m each is 0.15c...

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  10. Across a long conductor 2A current is flowing. At 10 cm from it anothe...

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  11. Two parallel conductors are separated by 5cm. They carry 6A and 2A in ...

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  12. A horizontal wire carries 200A current below which another wire of lin...

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  13. There long, straingth parallel wires carrying current, are arranged as...

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  14. Find AB.

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  17. A 16cm^(2) coil has 20 turns. Its suspended by a phosphor bronze wire ...

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  18. A rectangular coil of 500 turn 10^(-2)m^(2) area carrying 1 A is in a ...

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  19. A rectangular coil of length 0.12 m and width 0.1.m having 50 turns of...

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  20. A coil in the shape of an equilateral triangle of side l is suspended ...

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