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A Conducting Sphere of Radius 20 Cm Has a Charge

Question 15

Multiple Choice

A conducting sphere of radius 20 cm has a charge Q placed on it producing a field of magnitude E0 at its surface. More charge is added to the surface until the magnitude of the field at the surface is 2 E0. If the potential at the surface was V0 when the field was E0, what is the potential when the field is 2 E0?


A) V0/2
B) 2 V0
C) 4 V0
D) 5 V0
E) 16 V0

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