Find AB.

A

`8 xx 10^(-4)` N attraction

B

`7.2xx10^(-4)N` attraction

C

`7.2xx10^(-4)N` repulsion

D

`4xx10^(-4)N` repulsion

Text Solution

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The correct Answer is:
B
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AAKASH SERIES-MOVING CHARGES AND MAGNETISM-EXERCISE-II
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  8. A rectangular coil of length 0.12 m and width 0.1.m having 50 turns of...

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

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  10. A moving coil galvanometer 'A' has 200 turns and a resistance of 100Om...

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  11. two galvanometers of resistance 100Omega and 50Omega, are 10^(-8)A//"d...

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  12. A vertical circular coil of one turn and radius 9.42 cm is placed with...

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  13. A current or 0.5 A produces a deflection of 60° in a tangent galvanome...

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  14. A tangent galvanometer shows no deflection when a current is passed th...

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  15. The senstivity of a galvanometer that measures current is decreased by...

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  16. In a galvanometer 5% of the total current in the circuit passes throug...

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  17. A galvanometer of resistance 150 ohm is shunted such that only 1/11 of...

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  18. A galvanometer has coil of resistance 50Omega and shows full deflectio...

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  19. A galvanometer has a current range of 15mA and voltage range of 750mv....

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  20. To convert a 800 mV range milli-voltmeter of resistance 40.Q into a mi...

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