The equivalent capacitance of the combination shown in the figure is :
A
3C/2
B
3C
C
2C
D
C/2
2
NEET 2020 Phase 1
MCQ (Single Correct Answer)
+4
-1
The capacitance of a parallel plate capacitor with air as medium is 6$$\mu $$F. With the introduction of a dielectric medium, the capacitance become 30 $$\mu $$F The permittivity of the medium is : $$\left( {{\varepsilon _0} = 8.85 \times {{10}^{ - 12}}{C^2}{N^{ - 1}}{m^{ - 2}}} \right)$$
A parallel plate capacitor of capacitance 20 $$\mu $$F is being charged by a voltage source whose potential is changing at the rate of 3V/s. The conduction current through the connecting wires, and the displacement current through the plates of the capacitor, would be, respectively :
A
zero, zero
B
zero, 60 $$\mu $$A
C
60 $$\mu $$A, 60 $$\mu $$A
D
60 $$\mu $$A, zero
4
NEET 2018
MCQ (Single Correct Answer)
+4
-1
The electrostatic force between the metal plates
of an isolated parallel plate capacitor C having
a charge Q and area A, is
A
Independent of the distance between the
plates
B
Linearly proportional to the distance
between the plates
C
Proportional to the square root of the
distance between the plates
D
Inversely proportional to the distance
between the plates
