Two metal spheres of radii ${R_1}$ and ${R_2}$ are charged to the same potential. The ratio of charges on the spheres is
  • A$\sqrt {{R_1}} \;:\;\sqrt {{R_2}} $
  • B${R_1}\;:\;{R_2}$
  • C$R_1^2\;:\;R_2^2$
  • D$R_1^3:\;R_2^3$
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