A) decreases
B) remains unchanged
C) becomes infinite
D) in creases
Correct Answer: B
Solution :
Aluminium is a metal, so when we insert an aluminium foil, equal and opposite charges appear on its two surfaces. Since, it is of negligible thickness, it will not affect the capacitance. Alternative From the formula \[C=\frac{{{\varepsilon }_{0}}A}{d-t+\frac{t}{K}}\] Here,\[K=\infty \]and \[t\to 0\] So, \[C=\frac{{{\varepsilon }_{0}}A}{d+0}=\frac{{{\varepsilon }_{0}}A}{d}={{C}_{0}}\]You need to login to perform this action.
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