STANDARDPhysics-Magnetism
STANDARD Physics Magnetic Field due to Current MCQ Question
Type: MCQ-conceptual-Medium
A current I is flowing through a loop. The direction of the current and the shape of the loop are as shown in the figure. The magnetic field at the centre of the loop is time (Here, MA = R, MB = 2R, ∠DMA = 90°)

A
, out of the plane of the paper.
B
, into the plane of the paper.
C
, out of the plane of the paper.
D
, into the plane of the paper.
Correct Answer
Option D
Detailed Explanation
The magnetic field at the centre M due to the current through the curved portion DA is into the plane of the paper. The magnetic field due to the straight portion AB is zero. Therefore, the net magnetic field is into the plane of the paper.
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