29 30 A current loop ABCD is held fixed on the plane of the paper as shown in the figure The arcs BC radius b and radius a of

Question

29 30 A current loop ABCD is held fixed on the plane of the paper as shown in the figure The arcs BC radius b and radius a of the loop are joined by two straight wires AB and CD A steady current I is flowing in the loop An made by AB and CD at the origin O is 30 Another straight thin wire with steady current I flowing out of the plane AIEEE 200 the paper is kept at the origin 3 aA 9 30 The magnitude of the magnetic field due to the loop ABCD at the origin O is l b a MI b a 4 ab 24ab H 2 b a a b 4T 2 B 4 zero Due to the presence of the current I at the origin 1 The forces on AD and BC are zero HI I 2 The magnitude of the net force on the loop is given by 4t II 3 the magnitude of the net force on the loop is given by 24ab 4 the forces on AB and DC are zero a a b 2 b a a b a

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