A charged particle is suspended in equilibrium in a uniform vertical electric field of intensity $20000\, V/m$. If mass of the particle is $9.6 \times {10^{ - 16}}\,kg$, the charge on it and excess number of electrons on the particle are respectively $(g = 10\,m/{s^2})$
A charged particle is suspended in equilibrium in a uniform vertical electric field of intensity $20000\, V/m$. If mass of the particle is $9.6 \times {10^{ - 16}}\,kg$, the charge on it and excess number of electrons on the particle are respectively $(g = 10\,m/{s^2})$
- A
$4.8 \times {10^{ - 19}}\,C,\,3$
- B
$5.8 \times {10^{ - 19}}\,C,\,4$
- C
$3.8 \times {10^{ - 19}}\,C,\,2$
- D
$2.8 \times {10^{ - 19}}\,C,\,1$
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