A parallel plate capacitor having plates of area S and plate separation d, has capacitance C 1 in air. When two dielectrics of different relative permittivities (e 1 = 2 and e 2 = 4) are introduced between the two plates as shown in the figure, the capacitance becomes C 2 . The ratio 
is
Text Solution
Verified by ExpertsThe correct answer is:
D
C 1 = 
; C = 
= 
C' = 
= 
; C" = 
= 
C 2 = 
+ C'' = 
+ 
= 
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