Capacitors IIT JEE

Hello sir I am here as I want to get the sample question Based on Capacitors Topic of IIT JEE so will you please provide me the Questions??

[Rajkumar Agarwal]

Hey!!! As per your demand here I am providing you sample question Based on Capacitors Topic of IIT JEE

1.A parallel plate capacitor (of capacity C ) is charged using a battery of potential V, It is disconnected from the battery and the plates of the capacitor are moved away from each other. Now it is reconnected to the same battery. Then

charge flows flows from the capacitor to the battery
charge flows from the battery to the capacitor
there is no flow of charge
the direction of flow of charge depends on the values of V and C.

2.An air capacitor of 6pF is immersed in an oil whose dielectric constant is 2.0. The capacitance of one oil capacitor will be

2.5 pF
8.5 pF
22 pF
12.0 pF

3.A parallel-plate capacitor is held horizontally so that one of the plates is submerged in the liquid while the other is above the surface of the liquid. A constant potential difference is applied between the plates. The level of the liquid between the plates
Will

rise
fall
remain unaffected
oscillate

4.A parallel plate capacitor is charged and the charging battery is then disconnected. If the plates of the capacitor are moved farther apart by means of insulating handles,

the charge on the capacitor increases
the voltage across the capacitor plates increases
the capacitance increases
the electrostatic energy stored in the capacitor decreases.

5.A parallel plate capacitor is made by stacking n equally spaced plates connected alternately. If the capacitance between any two plates is C then the resultant capacitance is

C
nC
(n - 1) C
(n + 1) C

6.In order to increase the capacity of a parallel plate condenser one should introduce between the plates a sheet of

mica
tin
copper
stainless steel

7.A parallel-plate capacitor has two plates of area A and separation d and is charged to a potential difference V. The charging battery is then disconnected and the plates are pulled apart until their separation is 2d. The new potential difference between the plates is

V
2 V
V/2
V/4

8.If q is the charge on the capacitor and E is the magnitude of the electric field between the plates, the force on each plate of the capacitor is

qE
2qE
1 / 2 qE
1 / 4 qE

9.The parallel plates of a capacitor are 1 cm apart. The original potential difference between them is 3000 V, and it decreases to 1000V when a sheet of dielectric of dielectric constant 6 is inserted between the plates. Calculate the thickness of the dielectric sheet.

0.4 cm
0.8 cm
0.6 cm
0.8 mm

10.A solid conducting sphere having charge Q is surrounded by an uncharged concentric conducting hollow spherical shell. Let the p.d. between the surface of the solid sphere and that of the outer surface of hollow shell be V. If now shell is given a charge - 3 Q, the new p.d. between the same two surfaces is

V
2V
4 V
- 2V