A metallic ring of radius R moves in a vertical plane in the presence of a uniform magnetic field B ⊥ to the plane of ring. At any given instant of time, its centre of mass moves with a velocity v while ring rotates in its COM frame with angular velocity ω. The magnitude of induced EMF between pts O & P is?
Dear student,
Assumptions:
The direction of rotation of the ring: Counterclockwise direction
The direction of motion of electrons in the ring: Along positive y-direction
The direction of magnetic field: z-direction
Lorentz's law:
From the above expression, it is clear that the direction of the force of electrons is in the direction of the negative x-axis.
Reason for induced emf:
Current is caused by the movement of electrons towards the centre. This will produce emf in
the ring between the point O and P.
The expression of induced emf:
Regards
Assumptions:
The direction of rotation of the ring: Counterclockwise direction
The direction of motion of electrons in the ring: Along positive y-direction
The direction of magnetic field: z-direction
Lorentz's law:
From the above expression, it is clear that the direction of the force of electrons is in the direction of the negative x-axis.
Reason for induced emf:
Current is caused by the movement of electrons towards the centre. This will produce emf in
the ring between the point O and P.
The expression of induced emf:
Regards