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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.

[2009]

Question : 76

Total: 100

The magnitude of the magnetic field (B) due to the loop ABCD at the origin (O) is :

[2009]

µoI(b−a)
24ab
µoI
4π
[
b−a
ab
]
moI
4p
[2(b−a)+p∕3(a+b)]
zero

Validate

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