Q.

The dielectrics K1 and K2 are filled between the plates of a capacitor as shown in Fig. 3.57 (A). The capacity of the system is :

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a

2ε0AK1K2K1+K2d

b

ε0AdK1+K22

c

ε0AK1K2K1+K2d

d

ε0AdK1+K2

answer is A.

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Detailed Solution

Where C1=Aε0K1d2 and C2=Aε0K2d2Ceffective=C1C2C1+C2=2ε0AK1K2K1+K2d
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