Question

find the polarity of magnetic feild due to current at point P .

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Answer 1

Answer:

Figure shows a circular loop of radius R that carries a current I and lies in the xz-plane. Point P is located above the center of the loop. Theta is the angle formed by a vector from the loop to the point P and the plane of the loop. It is equivalent to the angle formed by the vector dB from the point P and the y axis.

Determining the magnetic field at point P along the axis of a current-carrying loop of wire.