What is the excess charge on a conducting sphere of radius r = 0.31 m if the potential of the sphere is 1375 V and V = 0 at infinity?

Given Information:

Radius = r = 0.31 m

Potential difference = V = 1375 Volts

Required Information:

charge = q = ?

q = 4.741x10⁻⁸ C

Solution:

Where k = 8.99x10⁹ N.m²/C² is the Coulomb's constant

Re-arranging the equation to find the q

q = (1375*0.31)/8.99x10⁹

q = 4.741x10⁻⁸ C = 47.41 nC

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