The dielectric strength of air at $NTP$ is $3 \times 10^6 \, V/m$. The maximum charge that can be given to a spherical conductor of radius $3 \, m$ is:

  • A
    $3 \times 10^{-4} \, C$
  • B
    $3 \times 10^{-3} \, C$
  • C
    $3 \times 10^{-2} \, C$
  • D
    $3 \times 10^{-1} \, C$

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