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PhysicsNEET 2020Capacitors: series, parallel, energy stored

Electrostatic Potential and Capacitance

The capacitance of a parallel plate capacitor with air as medium is 6μF6 \mu{}F. With the introduction of a dielectric medium, the capacitance becomes 30μF30 \mu{}F. The permittivity of the medium is: (ε0=8.85×10−12 C2 N−1 m−2\varepsilon_0 = 8.85 \times 10^{-12}\ \mathrm{C^2\,N^{-1}\,m^{-2}})

  1. A.0.44×10−13 C2 N−1 m−20.44 \times 10^{-13}\ \mathrm{C^2\,N^{-1}\,m^{-2}}
  2. B.1.77×10−12 C2 N−1 m−21.77 \times 10^{-12}\ \mathrm{C^2\,N^{-1}\,m^{-2}}
  3. C.0.44×10−10 C2 N−1 m−20.44 \times 10^{-10}\ \mathrm{C^2\,N^{-1}\,m^{-2}}✓
  4. D.5.00 C2 N−1 m−25.00\ \mathrm{C^2\,N^{-1}\,m^{-2}}

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