A magnet of magnetic moment M is lying along a uniform magnetic field B the work done in rotating the magnet by 90 is
Answers
Answer : W = M B
Explanation :
It is given that a magnet if magnetic moment M is lying along a uniform magnetic field B. the work done in rotating the magnet by is :
So, the work done in rotating the magnet by is MB.
Hence, this is the required solution.
Answer: The work done in rotating the magnet by ninety degree is MB.
Explanation:
In the given problem, a magnet of magnetic moment M is lying along a uniform magnetic field B.
The expression for torque in terms of magnetic moment and magnetic field is as follows;
Here, tau is torque, M is the magnetic moment, B is the magnetic field and theta is the angle.
The expression for the work done in rotating the magnet is as follows;
Put and .
Therefore, the work done in rotating the magnet by ninety degree is MB.