Polarization Vector

Q.

A parallel plate capacitor is charged by connecting its plates to the terminals of a battery. The battery is then disconnected and a glass plate is interposed between the plates of the capacitor, then

1. The capacity increases while the potential difference decreases

2. The capacity increases while the potential difference increases

3. The capacity decreases while the potential difference increases

4. capacity decreases while the potential difference decreases

Q. All the molecules in a non polar dielectric are symmetric in nature.

1. True
2. False

Q. A capacitor 1mF withstands a maximum voltage of 6KV, while another capacitor 2mF withstands a maximum voltage of 4KV. If the capacitors are connected in series, the system will withstand a maximum voltage of?

1. 2 KV
2. 4 KV
3. 6 KV
4. 9 KV

Q. Three identical capacitors with same plate area and same plate separation of 1mm are filled with dielectrics of dielectric constant $k_1,k_2$ and $k_3$ having dielectric breakdown of $E_1,E_{2}and{E}_3$ respectively are arranged as shown in figure.
Given :
$k_1=2,E_1=3\times {10}^{6}v/m$
$k_2=4,E_2=20\times {10}^{6}v/m$
$k_3=5,E_3=5\times {10}^{6}v/m$

Maximum value of $E_o$ is $n\times {10}^3$ Volts, then n is

Q. The capacity of capacitor is $2\mu F$. If a medium is placed between its plates, the capacity becomes $12\mu F$. The dielectric constant of the medium will be
[Pb. PMT 2003]

1. 5
2. 4
3. 3
4. 6