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If the key in the arrangement, [figure] ...

If the key in the arrangement, [figure] is taken out (the circuit is made open) and magnetic field lines are drawn over the horizontal plane ABCD, the lines are:

A

concentric circles

B

elliptical in shape.

C

straight lines parallel to each other

D

concentric circles near the point o but of elliptical shapes as we go away from it.

Text Solution

Verified by Experts

The correct Answer is:
C
When the key is taken out the crcuit is open, no current flows and no magnetic field due to current carrying field which will exhibit straight lines parallel to conductor. There exists only earth.s magnetic each other
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