engineering recuitment PSTCL ALM (Assistant Lineman) 2021 Mock Test Physics Moving Charges and Magnetism Magnetic Field on the Axis of a Circular Current Loop
Consider a circular loop of wire lying on the plane of a table. Let an electric current pass through the loop clockwise. The direction of the magnetic field inside is:
1
perpendicular to the plane of the table pointing into it
2
always along the tangent to the loop in the same sense of flow of the current
3
perpendicular to the plane of the table and appearing to emerge out from it
4
always along the tangent to the loop opposite to the sense of flow of the current