Question

When a dielectric slab is introduced between the parallel plate capacitor, its capacitance

• A. increases
• B. decreases
• C. remains the same
• D. become zero.

Answer 1

The correct option is A increase

The capacitance of the parallel plate capacitor is given as

$C=\frac{\epsilon A}{d}$ Where, A = Area of the plates, d = Distance between the plates

When a dielectric slab is inserted between the plates

New capacitance is given as

$C=\frac{{\epsilon }_{o}KA}{d}$ A Where, K = Dielectric constant

From both the equations, we can say that on introducing a dielectric slab in between the plates of a capacitor its capacitance increases.