(a) The potential at the surface of the sphere is determined as 63 MV.
(b) The distance from the center of the sphere at the given potential is 37.8 m.
Potential at the surface of the sphere
The potential at the surface of the sphere is calculated as follows;
V = kq/r
where;
- k is coulomb's constant
- q is magnitude of the charge
- r is radius of the sphere
V = (9 x 10⁹ x 5.25 x 10⁻³)/(0.5 x 1.5)
V = 63 x 10⁶ Volts
V = 63 MV
Distance from the center of the sphere
r = kq/V
r = (9 x 10⁹ x 5.25 x 10⁻³)/(1.25 x 10⁶)
r = 37.8 m
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