Advertisements
Advertisements
Question
Electric charges are distributed in a small volume. The flux of the electric field through a spherical surface of radius 10 cm surrounding the total charge is 25 V m. The flux over a concentric sphere of radius 20 cm will be _____________ .
Options
a
b
c
d
Advertisements
Solution
25 V m
The flux through a surface does not depend on its shape and size; it only depends upon the charge enclosed inside the volume. Here, the charge enclosed by the sphere of radius 10 cm and the sphere of radius 20 cm is same so the flux through them will also be same.
APPEARS IN
RELATED QUESTIONS
Define electric flux.
Write S.I unit of electric flux.
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 ?
What is the net flux of the uniform electric field of previous question through a cube of side 20 cm oriented so that its faces are parallel to the coordinate planes?
Define Electric Flux.
A thin straight infinitely long conducting wire having charge density λ is enclosed by a cylindrical surface of radius r and length l, its axis coinciding with the length of the wire. Find the expression for the electric flux through the surface of the cylinder.
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?
Mark the correct options:
The electric field in a region is given by `vec"E"` = 5 `hatk`N/C. Calculate the electric flux Through a square of side 10.0 cm in the following cases
- The square is along the XY plane
- The square is along XZ plane
- The normal to the square makes an angle of 45° with the Z axis.
If the flux associated with a coil changes at the rate of 360 webers every 4 minutes, then the induced e.m.f. is ______
An electric charge q is placed at the centre of a cube of side a. The electric flux on one of its faces will be ______.
If the electric flux entering and leaving an enclosed surface respectively is Φ1 and Φ2, the electric charge inside the surface will be
An electric charge q is placed at the center of a cube of side ℓ. The electric flux on one of its faces will be ______.
For a general surface, electric flux is calculated using which integral expression?
The formula for electric flux when the electric field is uniform is expressed as which of the following?
For an open surface, which statement correctly describes the area vector convention?
When the surface normal is parallel to the electric field (θ = 0°), what is the value of the flux?
Electric flux is a scalar quantity, but its value can be positive, negative, or zero. What does this depend on?
