a circular copper disc 10cm in diameter rotates at 1800rpm about an axis passing through its center and normal to its plane.A uniform magnetic field of 1 wbm(-2) exists normal to the disc then the potrntial difference developed b/w the axis and the rim of the disc is? a)0.023V b)0.23V c)23V d)230V ..help to solve guys..
Why does stirring avoid over spilling of milk?
Stirring causes uniform heating of milk
It helps in releasing trapped steam and relieves pressure
It sets convectional currents inside milk which stops milk from rising up in the vessel.
It increases the viscosity of milk which prevent the over spilling.