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The Folloeing Figure Shows a Closed Surface that Intersects a Conducting Sphere. If a Positive Charge is Placed at Point P, - Physics

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प्रश्न

The following figure shows a closed surface that intersects a conducting sphere. If a positive charge is placed at point P, the flux of the electric field through the closed surface

पर्याय

  •  will remain zero

  • will become positive

  •  will become negative

  • will become undefined

MCQ
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उत्तर

 will become positive

 

A positive charge at point P will induce a negative charge on the near face of the conducting sphere, whereas the positive charge on the farther end of the sphere. As this father end is enclosed or intersected by the closed surface, so the flux through it will become positive due to the induced positive charge.

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पाठ 8: Gauss’s Law - MCQ [पृष्ठ १४१]

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एचसी वर्मा Concepts of Physics Vol. 2 [English] Class 11 and 12
पाठ 8 Gauss’s Law
MCQ | Q 8 | पृष्ठ १४१

संबंधित प्रश्‍न

How does the electric flux due to a point charge enclosed by a spherical Gaussian surface get affected when its radius is increased?


Define electric flux.


Write S.I unit of electric flux.


Two charges of magnitudes −2Q and +Q are located at points (a, 0) and (4a, 0) respectively. What is the electric flux due to these charges through a sphere of radius ‘3a’ 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 thin straight infinitely long conducting wire having charge density λ is enclosed by a cylindrical surface of radius 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 circular ring of radius r made of a non-conducting material is placed with its axis parallel to a uniform electric field. The ring is rotated about a diameter through 180°. Does the flux of the electric field change? If yes, does it decrease or increase?


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?


Following Figure (a) shows an imaginary cube of edge L/2. A uniformly charged rod of length (L) moves towards the left at a small but constant speed `nu.` At t = 0, the left end just touches the centre of the face of the cube opposite it. Which of the graphs shown in the figure (b) represents the flux of the electric field through the cube as the rod goes through it?


A charge q is placed at the centre of the open end of a cylindrical vessel (see the figure). The flux of the electric field through the surface of the vessel is ____________ .


A charged particle q is placed at the centre O of cube of length L (A B C D E F G H). Another same charge q is placed at a distance L from O. Then the electric flux through ABCD is ______.


The total flux through the faces of the cube with side of length a if a charge q is placed at corner A of the cube is ______.


A cylinder of radius R and length L is placed in a uniform electric field E parallel to the cylinder axis. The total flux for the surface of the cylinder is given by ______.


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 ______.


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

  1. A: a corner of the cube.
  2. B: mid-point of an edge of the cube.
  3. C: centre of a face of the cube.
  4. D: mid-point of B and C.

The 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 20 V-m. The flux over a concentric sphere of radius 20 cm will be ______.


A hollow cylinder has a charge of 'q' C within it. If 𝜙 is the electric flux associated with the curved surface B, the flux linked with the plane surface A will be ______.


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