Advantages of Using Dielectrics in Capacitors

Q.

Between the plates of parallel plate capacitor of capacitance C, two parallel plates, of the same material and area same as per the plate of the original capacitor, are placed. If the thickness of these plates is equal to ${\frac{1}{5}}^{th}$ of the distance between the plates of the original capacitor, then the capacitance of the new capacitor is

1. $\frac{1}{5}$ C
   

2. $\frac{3}{5}$ C
   

3. $\frac{3}{10}$ C
   

4. $\frac{10}{3}$ C

Q. The advantages of using dielectrics are :

1. Increases capacitance.
2. Higher dielectric strength.
3. Increased stability.
4. All of these.

Q. After inserting a dielectric inside a parallel plate capacitor, the stability of the capacitor .

1. decreases
2. increases
3. remains same

Q.

Between the plates of parallel plate capacitor of capacitance C, two parallel plates, of the same material and area same as per the plate of the original capacitor, are placed. If the thickness of these plates is equal to ${\frac{1}{5}}^{th}$ of the distance between the plates of the original capacitor, then the capacitance of the new capacitor is

1. $\frac{1}{5}$ C
   

2. $\frac{3}{5}$ C
   

3. $\frac{3}{10}$ C
   

4. $\frac{10}{3}$ C

Q. If a battery is placed between $\text{A}$ and $\text{B}$, with what capacitor you can replace the combination of capacitors?

1. $6\mu \text{F}$
2. $26\mu \text{F}$
3. $10/3\mu \text{F}$
4. $8\mu \text{F}$

Q. How does inserting a dielectric between plates increase the capacitor’s stability?

1. The attractive force on plates makes the capacitor unstable. Dielectric gives support for the plates.
2. The dielectric gives more voltage capacity.
3. The dielectrics have higher relative permittivity than air.
4. None of these