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प्रश्न
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?
उत्तर
All the faces of a cube are parallel to the coordinate axes. Therefore, the number of field lines entering the cube is equal to the number of field lines piercing out of the cube. As a result, net flux through the cube is zero.
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संबंधित प्रश्न
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(a) the electric field must be zero everywhere on the surface
(b) the electric field may be zero everywhere on the surface
(c) the charge inside the surface must be zero
(d) the charge in the vicinity of the surface must be zero
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The electric flux through the surface ______.
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 |
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| (i) | (ii) | (iii) | (iv) |
A point charge q is placed at a distance a/2 directly above the centre of a square of side a. The electric flux through the square is ______.
In a region of space having a uniform electric field E, a hemispherical bowl of radius r is placed. The electric flux Φ through the bowl is:
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 ______.
The S.I. unit of electric flux is ______
What will be the total flux through the faces of the cube (figure) with side of length a if a charge q is placed at
- A: a corner of the cube.
- B: mid-point of an edge of the cube.
- C: centre of a face of the cube.
- D: mid-point of B and C.
