NEET Exam Model Paper 10

Charge remains constant after charging. If the battery is removed after charging, then the charge stored in the capacitor remains constant.
q = constant
New capacitance C′′=

ε0A

d′

As d′>d.Hence, C′<C
Hence potential difference between the plates
V′=

q

C′

V′α

1

C′

As capacitance decreases, so potential difference increases