Question

The capacitance of a parallel plate capacitor with air as medium is . With the introduction of a dielectric medium, the capacitance becomes . The permittivity of the medium is :

A
B
C
D
Medium
Solution
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Correct option is B)

Capacitance of air capacitor            ......... (i)When a dielectric of permittivity and dielectric constant K is introduced between the plates, thenCapacitance,       ..... (ii)Dividing eq. (ii) by (i), we get permittivity of the medium

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