An electron (charge $q$ $coulomb$) enters a magnetic field of $H$ $weber/{m^2}$ with a velocity of $v\,m/s$ in the same direction as that of the field the force on the electron is

  • A

    $Hqv$ Newton’s in the direction of the magnetic field

  • B

    $Hqv$ dynes in the direction of the magnetic field

  • C

    $Hqv$ Newton’s at right angles to the direction of the magnetic field

  • D

    Zero

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