A hollow insulated conducting sphere is given a positive charge of $10\,\mu \,C$. ........$\mu \,C{m^{ - 2}}$ will be the electric field at the centre of the sphere if its radius is $2$ meters

  • [AIPMT 1998]
  • A

    $0$

  • B

    $5$

  • C

    $20$

  • D

    $8$

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