Spheres of Charge: a Conducting Sphere 45 Cm in Diameter

Multiple Choice

Spheres of charge: A conducting sphere 45 cm in diameter carries an excess of charge, and no other charges are present. You measure the potential of the surface of this sphere and find it to be 14 kV relative to infinity. (k = 1/4πε₀ = 8.99 × 10⁹ N ∙ m²/C²) The excess charge on this sphere is closest to

A) 0.35 nC.
B) 79 nC.
C) 315 nC.
D) 350 nC.
E) 700 nC.