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Electrostatic Potential and Capacitance — Physics STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 SciencePhysicsElectrostatic Potential and Capacitance1 Mark
MCQ
A parallel plate capacitor is charged to a certain voltage. Now, if the dielectric material $($with dielectric constant $k)$ is removed then the
  • A
    Capacitance increases by $a$ factor of $k$
  • B
    Electric field reduces by $a$ factor $k$
  • C
    Voltage across the capacitor decreases by $a$ factor $k$
  • ✓
    None of these
✓

Answer

Correct option: D.
None of these

As the capacitor is charged by using cell so potential as well as filed between the plates become constant.
For removing dielectric the capacitance becomes $C/ k$. Thus capacitance decreases by $a$ factor of $k.$

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