Given: a parallel plate capacitor with a thin metal plate P inserted in between such that it touches the two plates.

Explanation:

When two plates of a capacitor are connected by a conductor) redistribution of charge takes place and both plates acquire same potential.

Thin metal plate P is a conductor and when connecting it to both plates of capacitor, charges gets neutralized and both the plates acquire same potential.

∴ potential difference = 0

We know that,

Where,

V is the potential difference across capacitor

Q=charge on the capacitor

⇒

∴ Capacitance of the capacitor becomes infinite and it can hold any amount of charge.

Thus, a thin metal plate p is inserted between the plates of a parallel plate capacitor of capacitance C in such a way that its edge touch the two plates. The capacitance now becomes ∞.