Question

A 1.00 cm diameter plastic sphere, used in a static electricity demonstration, has a charge of 22.6 pC uniformly distributed on its surface. What is the potential at its surface (or just barely above it)?

Answer 1

Electric potential, V = 40.68 volts

Step-by-step explanation:

Given that,

Charge on the sphere,
`q=22.6\ pC=22.6* 10^(-12)\ C`

Diameter of the plastic sphere, d = 1 cm

Radius, r = 0.5 cm

We need to find the electric potential at its surface. The potential at a surface is given by :

`V=(kq)/(r)`

`V=(9* 10^9* 22.6* 10^(-12))/(0.5* 10^(-2))`

V = 40.68 volts

So, the electric potential at its surface is 40.68 volts. Hence, this is the required solution.