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A magnetic needle has magnetic moment of...

A magnetic needle has magnetic moment of `6*7xx10^-2Am^2` and moment of inertial of `7*5xx10^-6kgm^2`. It perform `10` complete oscillations in `6*70s`. What is the magnitude of the magnetic field?

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To find the magnitude of the magnetic field \( B \) for the magnetic needle, we can follow these steps: ### Step 1: Identify Given Values We are given: - Magnetic moment \( M = 6.7 \times 10^{-2} \, \text{Am}^2 \) - Moment of inertia \( I = 7.5 \times 10^{-6} \, \text{kg m}^2 \) - Total time for 10 oscillations \( T_{total} = 6.70 \, \text{s} \) ...
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