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Electrostatics — Physics STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 SciencePhysicsElectrostatics1 Mark
MCQ
An oil drop having charge 2e is kept stationary between two parallel horizontal plates 2.0 cm apart when a potential difference of 12000 volts is applied between them. If the density of oil is 900 kg/m$^3$, the radius of the drop will be
  • A
    $2.0 \times 10^{-6}$m
  • ✓
    $1.7 \times 10^{-6}$m
  • C
    $1.4 \times 10^{-6}$m
  • D
    $1.1 \times 10^{-6}$m
✓

Answer

Correct option: B.
$1.7 \times 10^{-6}$m
(b) $1.7 \times 10^{-6}$m

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