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Homework Statement
a metal sphere of radius 0.39 m carries a charge 0.55 μC. Equipotential surfaces are to be drawn for 100-V intervals outside of the sphere.
Determine the radius of the first, tenth and 100th equipotential from the surface.
Homework Equations
V = kQ / r
Volt = (Coulombs Constant * Charge) / radius
The Attempt at a Solution
r = ((9.0X10^9 Nm²/C²)(.55X10^-6 C))/ (1 Nm/C)
r = ((9.0X10^9 Nm²/C²)(.55X10^-6 C))/ (10 Nm/C)
r = ((9.0X10^9 Nm²/C²)(.55X10^-6 C))/ (100 Nm/C)
all units cancel out and I'm left with meters but I'm getting the incorrect values according to the homework system that I'm using