The capacitance of a parallel plate capacitor with air as medium is 6 μF. With the introduction of a dielectric medium, the capacitance becomes 30 μF. The permittivity of the medium is : ($\epsilon_0 = 8.85 imes 10^{-12}$ $C^2$ $N^{-1}$ $m^{-2}$)

Question

The capacitance of a parallel plate capacitor with air as medium is 6 μF. With the introduction of a dielectric medium, the capacitance becomes 30 μF. The permittivity of the medium is : ($\epsilon_0 = 8.85 	imes 10^{-12}$ $C^2$ $N^{-1}$ $m^{-2}$)

Dr. Abubacker · Accepted Answer

[Solution] K = 30/6 = 5; $\epsilon = K\epsilon_0 = 5 	imes 8.85 	imes 10^{-12} = 0.44 	imes 10^{-10}$ $C^2N^{-1}m^{-2}$. The source key gives (3), which is incorrect. Answer (2).

Q. The capacitance of a parallel plate capacitor with air as medium is 6 μF. With the introduction of a dielectric medium, the capacitance becomes 30 μF. The permittivity of the medium is : ($\epsilon_0 = 8.85 \times 10^{-12}$ $C^2$ $N^{-1}$ $m^{-2}$)

Explanation

Reviewed by Dr. Abubacker

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