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A current carrying circular loop of magnetic moment \(\vec{M}\) is suspended in a vertical plane in an external magnetic…

Q1

A current carrying circular loop of magnetic moment \(\vec{M}\) is suspended in a vertical plane in an external magnetic field \(\vec{B}\) such that its plane is normal to \(\overrightarrow{ B }\). The work done in rotating this loop by \(45^{\circ}\) about an axis perpendicular to \(\vec{B}\) is closest to :

a

\(-0.3 MB\)

b

\(0.3 MB\)

c

\(-1.7 MB\)

d

\(1.7 MB\)

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