An isolated metal sphere of radius R, carrying an electric charge Q, is situated in the medium of relative permitivity, E^r. A test charge is placed at a point p, distance r from the surface of the sphere. Let E^o represent the permitivity of free space. The electric potential at p is given by the expression

Similar Questions

In which of the following media does sound travel faster? ...

A block of material of volume 2 X 10$^{-5}$m$^3$ and density 2.5 x 10$^3$ kgm$^{-3}$ is susp...

The energy stored in an inductor of inductance 5mH when a current of 6A flows through it is...

A transformer has 300 turns of wire in the primary coil and 30 turns in the secondary coil.If the in...

Cancerous cells can be destroyed by? ...

Both $\gamma$-rays and X-rays i. can be produced by thermionic emission ii. have low frequencies i...

A boy receives the echo of his clap reflected by a nearby hill 0.8s later. How far is he from the hi...

Three 4Ω resistors connected in parallel have a potential difference of 16 V applied across them. W...

Ice cubes are added to a glass of warm water. The glass and water are cooled by ...

Which of the following are both mechanical and transverse? ...