Download App

2. Electric potential and capacitance — Physics STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 SciencePhysics2. Electric potential and capacitance1 Mark
MCQ
A parallel plate capacitor after charging is kept connected to a battery and the plates are pulled apart with the help of insulating handles. Now which of the following quantities will decrease?
  • A
    Charge
  • B
    Capacitance
  • C
    Energy stored
  • ✓
    All of these
✓

Answer

Correct option: D.
All of these
d
(d)

$V$ remains constant

$C=\frac{A \varepsilon_0}{d} \Rightarrow d$ increases

$C$ decreases

$q=C V$

$q$ decreases $U=\frac{1}{2} C V^2$

$U$ decreases

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

When the current i is flowing through a conductor, the drift velocity is v. If 2i current is flowed through the same metal but having double the area of cross-section, then the drift velocity will be
→
While walking on ice, one should take small steps to avoid slipping. This is because smaller steps ensure:
→
Due to the earth's magnetic field, charged cosmic ray particles
→
The electrons are emitted in the photoelectric effect from a metal surface
→
The diagram given show the variation of voltage and current in an $AC$ circuit. The circuit contains.
Image
→
Which of the following statement is true for displacement current
→
For a convex lens, if real image is formed the graph between $(u + v)$ and $u$ or $ v$ is as follows
→
A magnet of magnetic moment $M$ is situated with its axis along the direction of a magnetic field of strength $B.$  The work done in rotating it by an angle of $180°$  will be
→
Permanent magnets should have:
→
A proton is projected with velocity $\overrightarrow{ V }=2 \hat{ i }$ in a region where magnetic field $\overrightarrow{ B }=(\hat{i}+3 \hat{j}+4 \hat{k})\; \mu T$ and electric field $\overrightarrow{ E }=10 \hat{ i } \;\mu V / m .$ Then find out the net acceleration of proton (in $m / s ^{2}$)
→