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Electrostatics — Physics STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 SciencePhysicsElectrostatics1 Mark
MCQ
A variable condenser is permanently connected to a 100 V battery. If the capacity is changed from 2μF to 10 μF, then change in energy is equal to
  • A
    $2 \times 10^{-2} \mathrm{~J}$
  • B
    $2.5 \times 10^{-2} \mathrm{~J}$
  • C
    $3.5 \times 10^{-2} \mathrm{~J}$
  • ✓
    $4 \times 10^{-2} \mathrm{~J}$
✓

Answer

Correct option: D.
$4 \times 10^{-2} \mathrm{~J}$
(d) $4 \times 10^{-2} \mathrm{~J}$

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