A parallel plate capacitor with air between plates has a capacitance of 9 pF . The s

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1. Electric Charges and Fields

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A parallel plate capacitor with air between the plates has a capacitance of $9\ pF$ . The separation between its plates is $ 'd'$ .The space between the plates is now filled with two dielectrics. One of the dielectric has dielectric constant $K_1 = 6$ and thickness $\frac {d}{3}$ while the other one has dielectric constant $K_2 = 12$ and thickness $\frac {2d}{3}$ . Capacitance of the capacitor is now ......... $pF$

A

$18$

B

$25$

C

$81$

D

$20$

Solution

Standard 12

Physics

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