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NEET 2024
Exam
NEET
Year
2024
Subject
Physics
Chapter
Magnetic Effects of Current

NEET 2024 · Physics · Magnetic Effects of Current

An iron bar of length L has magnetic moment M . It is bent at the...

An iron bar of length LL has magnetic moment MM. It is bent at the middle of its length such that the two arms make an angle 60∘60^{\circ} with each other. The magnetic moment of this new magnet is :An iron bar of length L has magnetic moment M . It is bent at the middle of its length such that the two arms make anAn iron bar of length L has magnetic moment M . It is bent at the middle of its length such that the two arms make an

Options

  1. AM2\frac{M}{2}
  2. B2M2 M
  3. CM3\frac{M}{\sqrt{3}}
  4. DMM

Correct answer

A. M2\frac{M}{2}

Step-by-step solution

An iron bar of length L has magnetic moment M . It is bent at the middle of its length such that the two arms make an
An iron bar of length L has magnetic moment M . It is bent at the middle of its length such that the two arms make an
ΔI=2I2sin⁡30∘=12M′=m//2=M/2\begin{aligned} & \Delta I=2 \frac{I}{2} \sin 30^{\circ} \\ & =\frac{1}{2} \\ & M^{\prime}=m / / 2 \\ & =M / 2\end{aligned}
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