A charged rod having charge as shown is rotating with angular velocity omega about on hinge at its centre. At the instant shown rod is along x- axis Consider effect of field at the instant shown.

A charged rod having charge as shown is rotating with angular velocity

1.	A charged rod having charge as shown is rotating with angular velocity omega about on hinge at its centre. At the instant shown rod is along x- axis Consider effect of field at the instant shown.
Answer» A magnetic field `B_(0)hat(i)` will SLOW down rod. An electric field `E_(0)hat(j)` will slow down rod. An electric field `E_(0)(-hat(j))` will slow down rod. A magnetic field can not slow down the rod. Solution : Magnetic FORCE is `bot` inward on right half and outward on LEFT body. It is constrained so no effect. Torque of electric force increases OMEGA Torque electric force DECREASES omega Rod will slow down only if force on any element is opposite to velocity magnetic force is always `bot` to velocity vector.

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A charged rod having charge as shown is rotating with angular velocity omega about on hinge at its centre. At the instant shown rod is along x- axis Consider effect of field at the instant shown.

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