A single current-carrying loop of wire carrying current I flows in the anticlockwise direction (seen from the +z direction) and lies in the xy plane. The plot of \(\hat{j}\) component of magnetic field (\(B_y\)) at a distance a (less than radius of the coil) and on the yz plane vs z coordinate looks like:
A single current-carrying loop of wire carrying current I flows in the anticlockwise direction (seen from the +z direction) and lies in the xy plane. The plot of \(\hat{j}\) component of magnetic field (\(B_y\)) at a distance a (less than radius of the coil) and on the yz plane vs z coordinate looks like:
Show Hint
For magnetic field due to current loops:
• Use the right-hand rule to determine the direction of the field.
• Symmetry plays a critical role in analyzing magnetic field variations.
The Correct Option is A
Solution and Explanation
- At z = 0 (plane of the loop), By = 0. - By is opposite in sign for +z and -z, as per the right-hand rule.
By = 0 in plane of coil By is opposite of each other in -z and +z positions.
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