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Two metal pieces having a potential diff...

Two metal pieces having a potential difference of `800V` are `0.02 m` apart horizontally. A particle of mass `1.96xx10^(-15) kg` is suspended in equilibrium between the plates. If the `e` is the elementary charge, then charge on the particle is

A

8

B

6

C

0.1

D

3

Text Solution

Verified by Experts

The correct Answer is:
D
In equilibrium `F=qE=("ne")V/e=mg`
`m=(mgd)/(eV)=(1.96xx10^(-15)xx9.8xx0.02)/(1.6xx10^(-19)xx800)=3`
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DISHA PUBLICATION-ELECTROSTATIC POTENTIAL AND CAPACITANCE-EXERCISE -1: CONCEPT BUILDER
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