A) \[d/3\]
B) \[5d/9\]
C) \[7d/9\]
D) \[d\]
Correct Answer: C
Solution :
[c] Let initial capacitance be \[C=\frac{{{\varepsilon }_{0}}A}{d}.\] \[{{C}_{final}}=\frac{{{\varepsilon }_{0}}A}{d'}=\frac{9}{2}\frac{{{\varepsilon }_{0}}A}{d}\] \[d'=\frac{2}{9}d\] Let the thickness of metal plate be t. \[d-t=d'\] \[t=\frac{7}{9}d\]You need to login to perform this action.
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