NCERT/Class 12/Physics/Electric Potential and Capacitance

Electric Potential and Capacitance

Class 12 · Physics

94 questions29 easy38 medium27 hard

Sample Questions

Q1.A parallel plate capacitor has plate area 6 × 10⁻⁴ m² and plate separation 3 × 10⁻³ m. Its capacitance is: (ε₀ = 8.85 × 10⁻¹² F/m)

  • A1.77 pF
  • B17.7 pF
  • C0.177 pF
  • D177 pF

Q2.The SI unit of permittivity of free space ε₀ is:

  • AC² N⁻¹ m⁻²
  • BN C⁻² m²
  • CF m⁻¹
  • DBoth a and c

Q3.The energy density (energy per unit volume) of an electric field E in free space is:

  • Aε₀E²
  • B½ε₀E²
  • Cε₀E²/4
  • D2ε₀E²

Q4.Electric potential due to an electric dipole at a point on its equatorial line is:

  • Akp/r²
  • B2kp/r²
  • Ckp/r
  • DZero

Q5.A capacitor is charged by a battery. The energy supplied by the battery equals U₀. The energy stored in the capacitor is:

  • A2U₀
  • BU₀
  • CU₀/2
  • DU₀/4

Q6.This is a sample question to preview what you'll get in the full practice test...

  • A. Option one
  • B. Option two
  • C. Option three
  • D. Option four
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Concepts Covered

CapacitanceCapacitors in series and parallelDielectricsElectric potentialElectrostatic potential energyEnergy stored in capacitorEquipotential surfacesParallel plate capacitorPotential due to dipolePotential due to point chargeRelation between E and VVan de Graaff generatorWork done by electric field

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