A dielectric slab of thickness d is inserted in a parallel plate … - Vidyadip

MCQ

A dielectric slab of thickness $d$ is inserted in a parallel plate capacitor whose negative plate is at $x = 0$ and positive plate is at $x = 3d$. The slab is equidistant from the plates. The capacitor is given some charge. As one goes from $0$ to $3d$

A
The magnitude of the electric field remains the same
B
The direction of the electric field remains the same
C
The electric potential increases continuously
✓
Both $(b)$ and $(c)$

✓

Answer

Correct option: D.

Both $(b)$ and $(c)$

d
(d) Even after introduction of dielectric slab, direction of electric field will be perpendicular to the plates and directed from positive plate to negative plate.
Further, magnitude of electric field in air $ = \frac{\sigma }{{{\varepsilon _0}}}$
Magnitude of electric field in dielectric $ = \frac{\sigma }{{K{\varepsilon _0}}}$
Similarly electric lines always flows from higher to lower potential, therefore, electric potential increases continuously as we move from $x = 0$ to $x = 3d$.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "M.C.Q (1 Marks)" from 2. Electric potential and capacitance→2. Electric potential and capacitance — all question types→Physics STD 12 Science question papers→CBSE Board STD 12 Science question papers→CBSE Board question paper generator→

Similar questions

A condenser of capacity $50\,\mu F$ is charged to $10\;volts$. Its energy is equal to

Two dielectric slabs of constant ${K_1}$ and ${K_2}$ have been filled in between the plates of a capacitor as shown below. What will be the capacitance of the capacitor

Time taken by the sunlight to pass through a window of thickness 4 mm whose refractive index is 1.5 is

For a constant collector-emitter voltage of $8\,V$, the collector current of a transistor reached to the value of $6\,mA$ from $4\,mA$, whereas base current changed from $20\,\mu A$ to $25\,\mu\,A$ value. If transistor is in active state, small signal current gain (current amplification factor) will be.

A particle of mass $m = 1.67 \times 10^{-27}\, kg$ and charge $q = 1.6 \times 10^{-19} \, C$ enters a region of uniform magnetic field of strength $1$ $tesla$ along the direction shown in the figure. If the direction of the magnetic field is along the outward normal to the plane of the paper, then the time spent by the particle in the region of the magnetic field after entering it at $C$ is nearly :-......$ns$

Two short magnets of equal dipole moments M are fastened perpendicularly at their centre (figure). The magnitude of the magnetic field at a distance d from the centre on the bisector of the right angle is

The wavelength of light diminishes $\mu $ times ($\mu = 1.33$ for water) in a medium. A diver from inside water looks at an object whose natural colour is green. He sees the object as

The vertical component of the earth's magnetic field is $6 \times 10^{-5} T$ at any place where the angle of dip is $37^{\circ}$. The earth's resultant magnetic field at that place will be $\left(\right.$ Given $\left.\tan 37^{\circ}=\frac{3}{4}\right)$

A cell of internal resistance r is connected to an external resistance R. The current will be maximum in R, if

The work done in rotating a bar magnet of magnetic moment $M$ from its unstable equilibrium position to its stable equilibrium position in a uniform magnetic field $B$ is .........