A parallel plate capacitor with a dielectric slab completely occupying the space between the plates is charged by a battery and then disconnected. The slab is pulled out with a constant speed. Which of the following curves represent qualitatively the variation of the capacitance $C$ of the system with time?
Medium
Download our app for free and get started
${\rm{C}} = \frac{{{ \in _0}}}{{\rm{d}}}\left( {{\rm{A}} + \left( {{\rm{k}} - 1} \right)xl} \right)$
$ \Rightarrow {\rm{C}} = \frac{{{ \in _0}}}{{\rm{d}}}({\rm{a}} + ({\rm{k}} - 1)l({\rm{a}} - {\rm{vt}})$
$\Rightarrow$ linear
Download our appand get started for free
Experience the future of education. Simply download our apps or reach out to us for more information. Let's shape the future of learning together!No signup needed.*
Similar Questions
- 1A uniform electric field having a magnitude ${E_0}$ and direction along the positive $X - $ axis exists. If the potential $V$ is zero at $x = 0$, then its value at $X = + x$ will beView Solution
- 2The value of equivalent capacitance of the combination shown in figure, between points $P$ and $Q$ isView Solution
- 3A parallel plate capacitor is charged to a potential difference of $50\, V$. It is discharged through a resistance. After $1$ second, the potential difference between plates becomes $40 \,V$. ThenView Solution
- 4Two conducting spheres of radii $5\, cm$ and $10\, cm$ are given a charge of $15\,\mu C$ each. After the two spheres are joined by a conducting wire, the charge on the smaller sphere is.......$\mu C$View Solution
- 5View SolutionA table tennis ball which has been covered with conducting paint is suspended by a silk thread so that it hang between two plates, out of which one is earthed and other is connected to a high voltage generator. This ball
- 6The magnitude of electric field on the surface of a uniformly charged metalic spherical shell is $E$. If a hole is made in it using a insulating device, then the magnitude of electric field in the hole will beView Solution
- 7View SolutionIn which of the following stores maximum energy ?
- 8View SolutionThe figure shows a diagonal symmetric arrangement of capacitors and a battery.Identify the correct statements.
- 9The figure shows a diagonal symmetric arrangement of capacitors and a battery. The potential of the point $B$ and $D$ areView Solution
- 10In the electric field of a point charge $q$, a certain charge is carried from point $A$ to $B$, $C$, $D$ and $E$. Then the work doneView Solution
