An unchanged capacitor with a solid dielectric is connected to a similar air capacitor charged to a potential of `V_(0).`. If the common potential after sharing of charges becomes V, then the dielectric constant of the dielectric must beA. `V_(0)//V`B. `(V)/(V_(0))`C. `((V_(0)-V))/(V)`D. `((V_(0)-V))/(V_(0))`

An unchanged capacitor with a solid dielectric is connected to a simil

1.	An unchanged capacitor with a solid dielectric is connected to a similar air capacitor charged to a potential of `V_(0).`. If the common potential after sharing of charges becomes V, then the dielectric constant of the dielectric must beA. `V_(0)//V`B. `(V)/(V_(0))`C. `((V_(0)-V))/(V)`D. `((V_(0)-V))/(V_(0))`
Answer» Correct Answer - C `"Common potential, V"=("Total charge")/("Total capacitance")` `V=(C_(1)V_(1)+C_(2)V_(2))/(C_(1)+C_(2))=(0+CV_(0))/(KC+C)` `K=(V_(0))/(V)-1=(V_(0)-V)/(V)`

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