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प्रश्न
It is said that any charge given to a conductor comes to its surface. Should all the protons come to the surface? Should all the electrons come to the surface? Should all the free electrons come to the surface?
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उत्तर
Protons never take part in any electrical phenomena because they are inside the nuclei and are not able to interact easily. These are the free electrons that are responsible for all electrical phenomena. So, if a conductor is given a negative charge, the free electrons come to the surface of the conductor. If the conductor is given a positive charge, electrons move away from the surface and leave a positive charge on the surface of the conductor.
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संबंधित प्रश्न
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Given the electric field in the region `vecE=2xhati`, find the net electric flux through the cube and the charge enclosed by it.
Given a uniform electric field `vecE=5xx10^3hati`N/C, find the flux of this field through a square of 10 cm on a side whose plane is parallel to the y-z plane. What would be the flux through the same square if the plane makes a 30° angle with the x-axis ?
Careful measurement of the electric field at the surface of a black box indicates that the net outward flux through the surface of the box is 8.0 × 103 N m2/C.
- What is the net charge inside the box?
- If the net outward flux through the surface of the box were zero, could you conclude that there were no charges inside the box? Why or Why not?
Two charges of magnitudes −3Q and + 2Q are located at points (a, 0) and (4a, 0) respectively. What is the electric flux due to these charges through a sphere of radius ‘5a’ with its centre at the origin?
Two charges of magnitudes +4Q and − Q are located at points (a, 0) and (− 3a, 0) respectively. What is the electric flux due to these charges through a sphere of radius ‘2a’ with its centre at the origin?
A small plane area is rotated in an electric field. In which orientation of the area, is the flux of the electric field through the area maximum? In which orientation is it zero?
The electric flux through a closed Gaussian surface depends upon ______.
The SI unit of electric flux is ______.
A hollow sphere of radius R has a point charge Q at its centre. Electric flux emanating from it is `phi`. If both the charge and the radius of the sphere are doubled, electric flux emanating from the sphere will ______.
Electric flux through a surface is defined as which of the following?
For a general surface, electric flux is calculated using which integral expression?
What is the dimensional formula for electric flux?
For a closed surface, which convention must be followed when assigning the area vector?
When the surface normal is parallel to the electric field (θ = 0°), what is the value of the flux?
When the surface is parallel to the electric field lines, what is the resulting electric flux?
When the electric field direction is opposite to the area vector (θ = 180°), what is the flux?
For a surface inclined at an angle such that 0° < θ < 90°, which statement correctly describes the flux?
