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The Circular Motion

The figure sh...

Question

The figure shows three non-conducting rods, one circular and two straight. Each has a uniform charge of magnitude Q distributed on its one half and -Q on its other half as shown in the figure. Which of these correctly represents the direction of field at point P:

A

I

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B

II

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C

III

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D

I & II

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Solution

The correct option is A I
As shown in the figure, direction of electric field in case I is correctly represented. In case II and III, resulting direction of electric field will be in vertically downward direction.

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