# A thin spherical conducting shell of radius R has a charge q. Another charge Q is placed at the centre of the shell. The electrostatic potential at a

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A thin spherical conducting shell of radius R has a charge q. Another charge Q is placed at the centre of the shell. The electrostatic potential at a point P a distance R/2 from the centre of the shell is
A. ((q+Q))/(4piepsilon_(0))(2)/(R)
B. (2Q)/(4piepsilon_(0)R)
C. (2Q)/(4pi epsilon_(0)R)-(2q)/(4pi epsilon_(0)R)
D. (2Q)/(4pi epsilon_(0)R)+(q)/(4pi epsilon_(0)R)

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