Two charges of magnitude $+ q$ and $-\,3q$ are placed $100\,cm$ apart. The distance from $+ q$ between the charges where the electrostatic potential is zero is.......$cm$

  • [AIIMS 2011]
  • A

    $25$

  • B

    $50$

  • C

    $75$

  • D

    $80$

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  • [IIT 2022]

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