The capacitance of a parallel plate capacitor with air as medium between the plates is 1 nF. When a material of dielectric constant 5 is filled between the plates, the new capacitance becomes-
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → 5 nF
The capacitance of a parallel plate capacitor,
$C=\frac{ε_0A}{d}$
when a dielectric material of K is introduced between the plates,
$C'=K×C$
$=1×5$
$=5 nF$