Download App

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

CBSE BoardEnglish MediumSTD 12 SciencePhysics2. Electric potential and capacitance1 Mark
MCQ
In a certain charge distribution, all points having zero potential can be joined by a circle $S$. Points inside $S$ have positive potential and points outside $S$ have negative potential. A positive charge, which is free to move, is placed inside $S$
  • A
    It will remain in equilibrium
  • B
    It can move inside $S$, but it cannot cross $S$
  • ✓
    It must cross $S$ at some time
  • D
    It may move, but will ultimately return to its starting point
✓

Answer

Correct option: C.
It must cross $S$ at some time
c
(c) A free positive charge move from higher (positive) potential to lower (negative) potential. Hence, it must cross $S$ at some time.

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 lens behaves as a converging lens in air and a diverging lens in water. The refractive index of the material is
→
The correct curve representing the variation of capacitive reactance $X_c$​ with frequency f is.
→
The maximum velocity to which a proton can be accelerated in a cyclotron of $10\, MHz$ frequency and radius $50\, cm$ is
→
The ratio of de-Broglie wavelength of a $\alpha$-particle to that of a proton being subjected to the same magnetic field so that the radii of their path are equal to each other assuming the field induction vector $\overrightarrow B $ is perpendicular to the velocity vectors of the  $B$ -particle and the proton is
→
A 60 watt bulb operates on 220V supply. The current flowing through the bulb is
→
A strong magnetic field is applied on a stationary electron, then
→
Four wires each of length 2.0 metres are bent into four loops P, Q, R and S and then suspended into uniform magnetic field. Same current is passed in each loop. Which statement is correct
→
Consider an extended object immersed in water contained in a plane trough. When seen from close to the edge of the trough the object looks distorted because:
→
The diagram below shows two coils $A$ and $B$ placed parallel to each other at a very small distance. Coil $A$ is connected to an ac supply. $G$ is a very sensitive galvanometer. When the key is closed
→
A vertical straight conductor carries a current vertically upwards. A point P lies to the east of it at a small distance and another point Q lies to the west at the same distance. The magnetic field at P is
→