Download App

Electric Charges and Fields — Physics STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 SciencePhysicsElectric Charges and Fields1 Mark
Question
What does $q_1+q_2=0$ represent in electrostatics?
✓

Answer

$q_1+q_2=0 \Rightarrow q_1=-q_2 i$ e. $q_1$ and $q_2$ are equal in result and opposite in nature. In electronics it actually refers to charge conservation.

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 "1 Marks Question" from Electric Charges and Fields→Electric Charges and Fields — all question types→Physics STD 12 Science question papers→Gujarat Board STD 12 Science question papers→Gujarat Board question paper generator→

Similar questions

What is the net magnetic moment of atom of diamagnetic substance?
→
Suppose that the electric field part of an electromagnetic wave in vacuum is $\text{E}=\{(3.1 \ \text{N}/\text{C}\cos[(1.8 \text{rad}/ \text{m}) \text{y}+(5.4\times10^6 \ \text{red}/\text{s}\text{t}]\hat{\text{i}}\}$.
  1. What is the direction of propagation?
  2. What is the wavelength λ ?
  3. What is the frequency ν ?
  4. What is the amplitude of the magnetic field part of the wave?
  5. Write an expression for the magnetic field part of the wave.
→
Which of the following has the least wavelength? Gamma rays, blue light, infrared radiation and ultraviolet radiation.
→
Write the formula for refraction on a spherical surface.
→
A converging lens is kept coaxially in contact with a diverging lens – both the lenses being of equal focal lengths. What is the focal length of the combination?
→
Write any two examples of diamagnetic substances.
→
For same value of angle of incidence, the angles of refraction in three media are 15°, 20° and 25° respectively. In which medium, the velocity of light will be minimum?
→
In a transistor, doping level in base is increased slightly. How will it affect (i) collector current and (ii) base current?
→
A magician during a show makes a glass lens with $n=1.47$ disappear in a trough of liquid. What is the refractive index of the liquid? Could the liquid be water?
→
When is a Wheatstone’s bridge most sensitive?
→