CBSE Class 12-science Answered
18. Derive an expression for the capacitance of parallel plate capacitor with a dielectric slab between its plates.
Asked by nilesh gangwani | 29 Nov, 2010, 10:43: AM
Expert Answer
Dear student
Effect of Dielectric on the Capacitance of a Capacitor
We know that the effect of completely filling the space between the plates of a capacitor with a difference is to increase the capacitance to C = K Co where K is the dielectric constant of the dielectric .
For a parallel plate capacitor ,
C = K =
Here = K is the permittivity of the dielectric .
If a dielectric slab of thickness 't' and dielectric constant K is introduced between the plates of a capacitor as shown in figure , the capacity is given by
C = .
We hope this clarifies your doubt.
Regards
Team
Topperlearning
Answered by | 29 Nov, 2010, 11:09: AM
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