Polarization Vector

Q. Dielectric constant of water is 81. What does it mean?

Q.

The unit of Polarization is?

1. $C/m^2$

2. $C/m^3$
3. $C/m$
4. $C-m^2$

Q. Which of the following is true in case of a dielectric strength, when the thickness of the material increases?

1. Remains same
2. Decreases
3. Increases
4. Becomes zero

Q. Dipole moment is a scalar quantity.

1. False
2. True

Q. Dielectric susceptibility is a proportionality constant that indicates the degree of polarization of a dielectric material in response to an applied electric field.

1. False
2. True

Q. A parallel plate capacitor having a separation between the plates $d$ , plate area $A$ and material with dielectric constant $k$ has capacitance $C_o$ . Now one third of the material is replaced by another material with dielectric constant $2k$, so that effectively there are two capacitors one with area $\frac{A}{3}$, dielectric constant $2k$ and another with area $\frac{2A}{3}$ and dielectric constant $k$. If the capacitance of this new capacitor is $C$ then the value of $\frac{C}{C_0}$ is:

1. $\frac{4}{3}$
2. $1$
3. $\frac{1}{3}$
4. $\frac{2}{3}$