Two conducting spheres $\mathrm{A}$ and $\mathrm{B}$ of radius $a$ and $b$ respectively are at the same electric potential. The ratio of the surface charge densities of $\mathrm{A}$ and $\mathrm{B}$ is

• Correct answer
  A

  $\frac{b}{a}$
• B

  $\frac{a}{b}$
• C

  $\frac{a^2}{b^2}$
• D

  $\frac{b^2}{a^2}$

Hence, the correct answer is option: 'A'.