A charged particle of mass $5 \times {10^{ - 5}}\,kg$ is held stationary in space by placing it in an electric field of strength ${10^7}\,N{C^{ - 1}}$ directed vertically downwards. The charge on the particle is

  • A

    $ - 20 \times {10^{ - 5}}\,\mu C$

  • B

    $ - 5 \times {10^{ - 5}}\,\mu C$

  • C

    $5 \times {10^{ - 5}}\,\mu C$

  • D

    $20 \times {10^{ - 5}}\,\mu C$

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