Question1

A nonconducting sphere of radius 5 cm is charged uniformly with a density of 97 nC/m³. What is the magnitude of the potential difference (in volts) between the center and a point 3.7 cm away?

Question2

A charge of 27 pC is distributed on an isolated spherical conductor that has a 8-cm radius. Point A is 1 cm from the center of the conductor and point B is 10 cm from the center of the conductor. Determine the electric potential difference V_A-V_B.

Question3

Two charges lie on the x axis, +2q at the origin, and -3q at x = 4.5 m. The point on the x axis where the electric potential has a zero value (when the value at infinity is also zero) is