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?

A magnetic needle has magnetic moment of `6*7xx10^-2Am^2` and moment o

1.	A magnetic needle has magnetic moment of `67xx10^-2Am^2` and moment of inertial of `75xx10^-6kgm^2`. It perform `10` complete oscillations in `6*70s`. What is the magnitude of the magnetic field?
Answer» Here, `M=67xx10^-2Am^2` `I=75xx10^-6kgm^2` Time for one oscillation, `T=(670)/(10)=067s, B=?` From `T^*=2pisqrt((I)/(MB))`, `B=(4pi^2I)/(MT^2)=(4xx(22//7)^2xx75xx10^-6)/(67xx10^-2(067)^2)` `=0*01T`

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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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A magnetic needle has magnetic moment of `67xx10^-2Am^2` and moment of inertial of `75xx10^-6kgm^2`. It perform `10` complete oscillations in `6*70s`. What is the magnitude of the magnetic field?