Download App

Electric Charges and Fields — Physics STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 SciencePhysicsElectric Charges and Fields2 Marks
Question
What is point electric charge?
✓

Answer

►If the sizes of the charged objects are very small compared to the distance between them, they are called point charges.
►For such an object, their entire charge is assumed to be concentrated at a point in the space.

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 "2 Marks Questions" from Electric Charges and Fields→Electric Charges and Fields — all question types→Physics STD 12 Science question papers→Rajasthan Board STD 12 Science question papers→Rajasthan Board question paper generator→

Similar questions

A particle starting from rest moves with constant acceleration. If it takes 5.0s to reach the speed 18.0km/h find:
  1. The average velocity during this period.
  2. The distance travelled by the particle during this period.
→
In discussing Doppler effect, we use the word "apparent frequency". Does it mean that the frequency of the sound is still that of the source and it is some physiological phenomenon in the listener's ear that gives rise to Doppler effect? Think for the observer approaching the source and for the source approaching the observer.
→
Write the formula for the torque acting on a current$-$carrying coil placed in uniform magnetic field and explain its stable and unstable equilibrium states.
→
A $10m$ wide spacecraft moves through the interstellar space at a speed $3 \times 10^7m/s^{-1}.$ A magnetic field $B = 3 \times 10^{-10}T$ exists in the space in a direction perpendicular to the plane of motion. Treating the spacecraft as a conductor, calculate the emf induced across its width.
→
Let $\vec{\text{a}}=2\vec{\text{i}}+3\vec{\text{j}}+4\vec{\text{k}}$ and $\vec{\text{b}}=3\vec{\text{i}}+4\vec{\text{j}}+5\vec{\text{k}}.$ Find the angle between them.
→
What is the Brewster angle for air to glass transition? (Refractive index of glass = 1.5.)
→
Draw the nature of the graph of binding energy per nucleon against atomic mass number and explain its notable points.
→
Draw a graph showing the variation of potential energy between a pair of nucleons as a function of their separation. Indicate the regions in which the nuclear force is. $(i)$ attractive, $(ii)$ repulsive.
→
A radio can tune in to any station in the 7.5 MHz to 12 MHz band. What is the corresponding wavelength band?
→
The masses of $^{11}C$ and $^{11}B$ are respectively $11.0114u$ and $11.0093u.$ Find the maximum energy a positron can have in the $\beta^+$-decay of $^{11}C$ to $^{11}B.$
→