To find the electric potential (V) at the surface of a charged sphere, we use the formula:
\[ V = \frac{k \cdot Q}{r} \]
where \( k \) is the electrostatic constant (\( 8.99 \times 10^9 \, \text{N m}^2/\text{C}^2 \)), \( Q \) is the charge of the sphere (\( 5.0
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