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JEE Main Physics Class 12 Moving Charges and Magnetism Part 1 Questions

Directions : Question numbers 91 and 92 are based on the following paragraph.
A current loop ABCD is held fixed on the plane of the paper as shown in the figure. The arcs‌B‌C( radius =b) and DA (radius =a) of the loop are joined by two straight wires AB and CD. A steady current I is flowing in the loop. Angle made by AB and CD at the origin O is 30°. Another straight thin wire with steady current I1 flowing out of the plane of the paper is kept at the origin.

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Question : 77

Total: 100

Due to the presence of the current I1 at the origin:

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The forces on AD and BC are zero.
The magnitude of the net force on the loop is givenby
I1I
4p
mo[2(b−a)+p∕3(a+b]
The magnitude of the net force on the loop is givenby
µoII1
24ab
(b−a)
The forces on AB and DC are zero.

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