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Electricity and Magnetism

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Moderate

Electric Field of an Isolated Charged Conductor

EANDM-OKRCGK

An isolated conducting sphere with a radius of 10 cm is charged to a potential (measured at its surface) of 300 kV.

What is the electric field at the surface of this conducting sphere?

A

30 V/cm

B

300 V/cm

C

3 kV/cm

D

30 kV/cm