Question

A dielectric material of dielectric constant k is inserted in half portion between the plates of a parallal plate capcitor . if its initial capacitance is c ,what is the new capacitance?​

Answer 1

Explanation:

c/c'= {(d-t)+( t/k)} / d

=>c'= d/ {(d-t)+( t/k)}.

here, ¶{{t=d/2}}¶

=>c'= d/ (d/2)(1+1/k)

=>c'=[ 2k/(1+k) ]c