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A bar magnet of magnetic moment {2}{A}{m}^{{{2}}} is free to r

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A bar magnet of magnetic moment $2 A m^{2}$ is free to rotate about a vertical axis passing through its centre. The magnet is released from rest from east-west position. Then the KE of the magnet as it takes N-S position is
$(B_{H} = 25 μ T)$ a. $25 μ J$ b. $50 μ J$ c. $100 μ J$ d. $12.5 μ J$

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Benjamin Discussed

A bar magnet of magnetic moment

2 A m^{2}

is free to rotate about a vertical axis passing through its centre. The magnet is released from rest from east-west position. Then the KE of the magnet as it takes N-S position is

(B_{H} = 25 μ T)

25 μ J

50 μ J

100 μ J

12.5 μ J

8 mins ago

Discuss this question LIVE

8 mins ago

Text solutionVerified

Sure, here are the step-by-step solutions: Given:

W = M B (cos θ_{1} - cos θ_{2})

To solve for

B

, we need to isolate it on one side of the equation. We can start by dividing both sides of the equation by

M

\frac{W}{M} = B (cos θ_{1} - cos θ_{2})

Next, we can divide both sides of the equation by \left({{\cos{\theta}}_{{{1}}}-}{\cos{\theta}}_{{{2}}}}\right): \dfrac{W}{M\left({{\cos{\theta}}_{{{1}}}-}{\cos{\theta}}_{{{2}}}}\right)} = B Therefore, the solution is: B = \dfrac{W}{M\left({{\cos{\theta}}_{{{1}}}-}{\cos{\theta}}_{{{2}}}}\right)}

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Question Text	A bar magnet of magnetic moment $2 A m^{2}$ is free to rotate about a vertical axis passing through its centre. The magnet is released from rest from east-west position. Then the KE of the magnet as it takes N-S position is $(B_{H} = 25 μ T)$ a. $25 μ J$ b. $50 μ J$ c. $100 μ J$ d. $12.5 μ J$
Topic	Magnetism, EMI and AC
Subject	Physics
Class	Class 11
Answer Type	Text solution:1

A bar magnet of magnetic moment $2 A m^{2}$ is free to rotate about a vertical axis passing through its centre. The magnet is released from rest from east-west position. Then the KE of the magnet as it takes N-S position is
$(B_{H} = 25 μ T)$ a. $25 μ J$ b. $50 μ J$ c. $100 μ J$ d. $12.5 μ J$

Text solutionVerified

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A bar magnet of magnetic moment 2Am2 is free to rotate about a vertical axis passing through its centre. The magnet is released from rest from east-west position. Then the KE of the magnet as it takes N-S position is (BH​=25μT)a. 25μJ b. 50μJ c. 100μJ d. 12.5μJ

Text solutionVerified

Practice more questions on Magnetism, EMI and AC

Students who ask this question also asked

A bar magnet of magnetic moment $2 A m^{2}$ is free to rotate about a vertical axis passing through its centre. The magnet is released from rest from east-west position. Then the KE of the magnet as it takes N-S position is
$(B_{H} = 25 μ T)$ a. $25 μ J$ b. $50 μ J$ c. $100 μ J$ d. $12.5 μ J$