Question

Magnetic field at any point on the axis of a circular loop and coil derivation

Answer 1

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The loop lies on yz plane and its axis lies on x axis. Let us derive field at point P at a distance x from the center. Consider a small element at dl on the coil. ... Magnetic field dB→ can be resolved into two components one dBsinθ parallel to the axis of the loop and other dBcosθ perpendicular to the axis.

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