Two insulated charged spheres of radii (20,cm) and (25,cm) r... | Physics | SolveeIt | Solveeit

Today, August 23

Question

Two insulated charged spheres of radii $20\,cm$ and $25\,cm$ respectively and having an equal charge $Q$ are connected by a copper wire and then they are separated

A

Both the spheres will have the same charge Q

B

Charge on the 20 cm sphere will be greater than that on the 25 cm sphere

C

Charge on the 25 cm sphere will be greater than that on the 20 cm sphere

D

Charge on each of the sphere will be 2

Answer

Charge on the 25 cm sphere will be greater than that on the 20 cm sphere

Explanation

Solution

The potential of the spheres on separation will be same. Also the capacitance is proportional to the radius. So capacitance of sphere having radius 25 cm is more. Since q = VC, therefore q for 25 cm sphere is more,