For current carrying circular loop, the field strength is :
maximum at the centre
The correct answer is option 4 i.e. maximum at the center. For a current-carrying circular loop, the magnetic field strength is maximum at its center.
Here's why:
- Contribution from all parts: Every small segment of the circular loop carrying current contributes to the magnetic field at the center in the same direction (as determined by the right-hand rule).
- Superposition: These individual contributions add up constructively at the center, resulting in a stronger magnetic field compared to points away from the center.
- Field lines: The magnetic field lines at the center of the loop are straight and perpendicular to the plane of the loop, indicating a uniform and maximum field strength in that region. As you move away from the center, the field lines curve and spread out, indicating a decrease in field strength.
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