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Two large conducting planes carrying cur...

Two large conducting planes carrying current perpendicular to X-axis and placed at (d,0) and (2d, 0) as shown in figure. Current per unit width in both the planes is same and current is flowing in the outward direction. The variation of magnetic induction (taken as positive if it is in positive Y-direction) as function of `(0lexle3d)` is best represented by :

A

B

C

D

Text Solution

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The correct Answer is:
D
For `0 le x le d`,magnetic induction is negative.
For `dlexle2d`,magnetic field due to the two planes cancel each other, hence becomes zero.
For `2d le x le 3d`magnetic field B is positive.
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