1.

A charged particle of mass 0.003 gm is held stationary in space by placing it in a downward direction of electric field of \[6\times {{10}^{4}}N/C\]. Then the magnitude of the charge is [Orissa JEE 2002]

A.            \[5\times {{10}^{-4}}C\]
B.                                      \[5\times {{10}^{-10}}C\]
C.            \[-18\times {{10}^{-6}}C\]
D.                                      \[-5\times {{10}^{-9}}C\]
Answer» C.            \[-18\times {{10}^{-6}}C\]


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