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
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
- A
$5 \times {10^{ - 4}}\,C$
- B
$5 \times {10^{ - 10}}\,C$
- C
$ - 18 \times {10^{ - 6}}\,C$
- D
$ - 5 \times {10^{ - 9}}\,C$
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Write equation of electric field by system of $\mathrm{'n'}$ charges.
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- [JEE MAIN 2013]
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