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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
  • D
    None of these
✓

Answer

  1. None of these

Explanation:

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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