The potential at a distance $R/2$ from the centre of a conducting sphere of radius $ R$ will be
  • A$0$
  • B$\frac{Q}{{8\pi {\varepsilon _0}R}}$
  • C$\frac{Q}{{4\pi {\varepsilon _0}R}}$
  • D$\frac{Q}{{2\pi {\varepsilon _0}R}}$
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