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Potential at center of sphere 
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Oct1507, 07:15 PM

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A metal sphere carries a charge of 5 x 10^9 C and is at a potentional of 400 V, relative to the potential far away. The potential at the center of the sphere is:
A) 400V B)400V C)2 x 10^6 V D)0 E) none of these What equation(s) would i use to solve this? 


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