Question

A sheet of aluminum foil of negligible thickness is placed between the plates of a capacitor of capacitance $C$ as shown in the figure if foil is connected to any one plate of a capacitor by means of conducting wire then the capacitance of capacitor becomes -

• A. $2C$
• B. $C$
• C. $C/2$
• D. Zero

Answer 1

The correct option is A $2C$

d becomes d/2, hence the Capacitance becomes twice the original.