A point charge $q$ is placed at the centre of a sphere of linear dielectric material of permittivity ε. The sphere is of radius $a$ and is placed in a vacuum. How would I go about finding the ...
A ball (radius $R$) has three layers. For $0<r<a$ it is a conductor with free charge $+Q$. For $a<r<b$ it is a linear dielectric $\epsilon$ with free charge embedded in it with density ...
Is putting a charged balloon up to a neutral wall polarization AND temporary induction, or just polarization?
Is putting a balloon that is charged up against a wall and having it stick polarization AND charging by temporary induction, or just polarization?