Download App

Gausss Law — Physics STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 SciencePhysicsGausss Law3 Marks
Question
A spherical shell made of plastic, contains a charge Q distributed uniformly over its surface. What is the electric field inside the shell? If the shell is hammered to deshape it without altering the charge, will the field inside be changed? What happens if the shell is made of a metal?
✓

Answer

As the shell is made of plastic, it is non-conducting. But as the charge is distributed uniformly over the surface of the shell, the sum of all the electric field vectors at the centre due to this kind of distribution is zero. But when the plastic shell is deformed, the distribution of charge on it becomes non-uniform. In other words, the sum of all the electric field vectors is non-zero now or the electric field exists at the centre now.
In case of a deformed conductor, the field inside is always zero.

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 "3 Marks Question" from Gausss Law→Gausss Law — all question types→Physics STD 12 Science question papers→Rajasthan Board STD 12 Science question papers→Rajasthan Board question paper generator→

Similar questions

A positive ion having just one electron ejects it if a photon of wavelength $288\mathring{\text{A}}$ or less is absorbed by it. Identify the ion.
→
In a soccer practice session the football is kept at the centre of the field $40$ yards from the $10ft$ high goalposts. A goal is attempted by kicking the football at a speed of $64ft/s$ at an angle of $45^\circ$ to the horizontal. Will the ball reach the goal post?
→
In defining the ideal gas temperature scale, it is assumed that the pressure of the gas at constant volume is proportional to the temperature T. How can we verify whether this is true or not? Are we using the kinetic theory of gases? Are we using the experimental result that the pressure is proportional to temperature?
→
A solid sphere is set into motion on a rough horizontal surface with a linear speed v in the forward direction and an angular speed $\frac{\text{v}}{\text{R}}$ in the anticlockwise direction as shown in figure. Find the linear speed of the sphere:
  1. When it stops rotating.
  2. When slipping finally ceases and pure rolling starts.
→
A cubical block of mass m and edge a slides down a rough inclined plane of inclination $\theta$ with a uniform speed. Find the torque of the normal force acting on the block about its centre.
→
The ground state energy of hydrogen atom is $–13.6 eV.$
  1. What is the kinetic energy of an electron in the $2^{nd}$ excited state?
  2. If the electron jumps to the ground state from the $2^{nd}$ excited state, calculate the wavelength of the spectral line emitted.
→
A lawyer alleges in court that the police has forced his client to issue a statement of confession. What kind of force is this?
→
A ball of mass $0.50\ kg$ moving at a speed of $5.0\ m/s$ collides with another ball of mass $1.0\ kg.$ After the collision the balls stick together and remain motionless. What was the velocity of the $1.0\ kg$ block before the collision?
→
Write Gauss's law and explain.
→
Let x and a stand for distance. Is $\int\frac{\text{dx}}{\sqrt{\text{a}^2-\text{x}^2}}=\frac{1}{\text{a}}\sin^{-1}\frac{\text{a}}{\text{x}}$ dimensionally correct?
→