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Electrostatics — Physics STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 SciencePhysicsElectrostatics1 Mark
MCQ
A small sphere carrying a charge $'q\ '$ is hanging in between two parallel plates by a string of length $L$. Time period of pendulum is $T_0$. When parallel plates are charged, the time period changes to $T$. The ratio $T / T_0$ is equal to
  • A
    $\left(\frac{g+\frac{q E}{m}}{g}\right)$
  • B
    $\left(\frac{g}{g+\frac{q E}{m}}\right)$
  • ✓
    $\left(\frac{g}{g+\frac{q E}{m}}\right)$
  • D
    None of these
✓

Answer

Correct option: C.
$\left(\frac{g}{g+\frac{q E}{m}}\right)$
$\left(\frac{g}{g+\frac{q E}{m}}\right)$

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