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2. Electric potential and capacitance — Physics STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 SciencePhysics2. Electric potential and capacitance1 Mark
MCQ
A parallel plate air-core capacitor is connected across a source of constant potential difference. When a dielectric plate is introduced between the two plates then :
  • A
    some charge from the capacitor will flow back into the source.
  • B
    some extra charge from the source will flow back into the capacitor.
  • C
    the electric field intensity between the two plate does not change.
  • ✓
    $B$ and $C$ both
✓

Answer

Correct option: D.
$B$ and $C$ both
d
$\underset{\text { same }}{\mathrm{V}}=\underset{\text { same }}{\mathrm{E}}$ $d$ $,$ so $\mathrm{E}=$ same

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