A current loop A B C D is held fixed on the plane of the paper as shown in the figure. The arcs B C (radius =b ) and D A (radius =a ) of the loop are joined by two straight wires A B and C D. A steady current I is flowing in the loop. Angle made by A B and C D at the origin O is 30^{∘}. Another straight thin wire steady current I_1 flowing out of the plane of the paper is kept at the origin.The magnitude of the magnetic field (B) due to the loop A B C D at the origin (O) is :

Question

Examsnet · Accepted Answer

Correct Answer is : ‌µ0I(b−a)24ab

AIEEE 2009 Solved Paper