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Electrostatic Potential And Capacitance

Question

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A parallel plate capacitor has a capacity of 6 μ F in air and 60 μF when dielectric medium is introduced. What is dielectric constant of medium?

Solution

Given,
Capacitance of capacitor in air-C_o= 6 μF
Capacitance of capacitor in dielectric medium-C_m= 60 μF

∴

dielectric constant of medium is given by,

K = \frac{C_{m}}{C_{0}} = \frac{60}{6} = 10 .

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