When we connect a battery across a loop of wire having some finite resistance there comes into picture an electric field E which is empirically given by J/sigma.(sigma==>conductivity).
but how can there exist an electric field inside a conductor??We had already learned that electric
conductor...
I asked my friend : This is what he says:
" Mathematically , we are arriving at a result which makes us perceive that for any disk of finite radius having uniform charge distribution,as we approach the centre of the ring;it is same as we are approaching infinity.It is the radius x/r which...
Regarding electric field at the center of a uniformly charged disc?
The electric filed at a distance x from the center of a uniformly charged disc of radius R,along the axis passing through the center is given by E = sigma/2e(1-x/rt(x^2+R^2)) where sigma is surface charge density and e is...