What is the source of centripetal force , when an electron revolves around the nucleus ?

Why do the electrons revolve around the nucleus?

What is the source of centripetal force that a planet requires to revolve around the sun ? On what factors does that force depend?

What is centripetal force ?

According to Rutherford, which force was responsible for certripetal acceleration of an electron revolving around the nucleus ?

The total energy of the electron revolving round the nucleus is

What provides the centripetal force to a satellite revolving around the earth ?

The ratio of centripetal forces on two electrons which are revolving around nucleus of hydrogent atom in 2^(nd) and 3^(rd) orbits respectively is

In an atom, electrons revolve around the nucleus in circular orbits. Can this be treated as electric current? If an electron revolves around the nucleus 2000 times in one second, what is the equivalent current? Given charge of the electrons as 1.6 xx 10^(-19)C .