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Question

A circular loop of radius R carrying current I lies in the X-Y plane with its centre at the origin. The total magnetic flux through the X-Yplane is.....


A

Directly proportional to I

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B

Directly proportional to R

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C

Directly proportional to R2

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D

Zero

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Solution

The correct option is D

Zero


Step 1 : Given data

Radius of circular loop=R

I lies in X-Y plane origin is its centre

Step 2 : Total magnetic flux through X-Y plane

A circular loop behaves like a dipole with one surface north pole and one surface is south pole . Since here total flux entering equals the total flux leaving and hence net flux equals to zero .

Hence total magnetic flux through X-Yplane Zero

The correct answer is Option D


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