Question

Which relation is not correct of the followings ?

• A. Torque = Moment of inertia $\times$ Angular acceleration
• B. Torque = Dipole moment $\times$ Magnetic induction
• C. Moment of inertia = Torque $\times$ Angular acceleration
• D. Linear momentum = Moment of inertia $\times$ Angular velocity

Answer 1

The correct option is C Moment of inertia = Torque $\times$ Angular acceleration

Torque $\tau =I\alpha$

where $I$ is the moment of inertia of the body, $\alpha$ is the angular acceleration about which the torque is calculated.

Hence statement A is correct and statement C is false.

Also $\tau =\mu \times B$

Thus statement B is correct.

However $I\times \omega =L=$Angular momentum

Hence statement D is true.