A circular coil having 200 turns, 2.5 × 10⁻⁴ ~m² area and carrying 100 μ A current is placed in a uniform magnetic field of 1 ~T. Initially the magnetic dipole moment (M) was directed along B. Amount of work, required to rotate the coil through 90^(°) from its initial orientation such that M becomes perpendicular to B, is _ _ _ _ μ J.

Magnetic Effects of Current and Magnetism: JEE Main 2024 Physics question

JEE Main 2024 · 6 Apr, Morning shift · Q68

JEE Main 20246 Apr, Morning shiftPhysicsHardMagnetic Effects of Current and Magnetism165× since 2002

A circular coil having 200 turns,

2.5 \times 10^{-4} \mathrm{~m}^2

area and carrying

100 \mu \mathrm{A}

current is placed in a uniform magnetic field of

1 \mathrm{~T}

. Initially the magnetic dipole moment

(\vec{M})

was directed along

\vec{B}

. Amount of work, required to rotate the coil through

90^{\circ}

from its initial orientation such that

\vec{M}

becomes perpendicular to

\vec{B}

, is ________

\mu

Your answerType your answer. Integers and decimals are accepted.

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