A) 2
B) 3
C) 4
D) 6
Correct Answer: D
Solution :
Capacitance with air, \[C=\frac{A{{\varepsilon }_{0}}}{d}\] When interspace between the plates is filled with wax, then \[C'=\,\frac{KA{{\varepsilon }_{0}}}{2d}\,\,or\,C''\,=\left( \frac{A{{\varepsilon }_{0}}}{d} \right)\,\frac{K}{2}\] \[C''=C\frac{K}{2}\Rightarrow 6=2\times \frac{K}{2}\,=K=6\]
You need to login to perform this action.
You will be redirected in
3 sec
