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State Gauss’S Law for Magnetism. Explain Its Significance. - Physics

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प्रश्न

State Gauss’s law for magnetism. Explain its significance. 

संक्षेप में उत्तर

उत्तर

Gauss's law of magnetism states that net magnetic flux through a closed surface (Gaussian surface) is zero. Mathematically 

`oint  vecB.dvecs = 0`

Gauss’s Law for magnetism tells us that magnetic monopoles do not exist 

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Gauss’s Law
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2018-2019 (March) 55/1/1

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संबंधित प्रश्न

A thin conducting spherical shell of radius R has charge Q spread uniformly over its surface. Using Gauss’s law, derive an expression for an electric field at a point outside the shell.


Draw a graph of electric field E(r) with distance r from the centre of the shell for 0 ≤ r ≤ ∞.


Answer the following question.
State Gauss's law on electrostatics and drive expression for the electric field due to a long straight thin uniformly charged wire (linear charge density λ) at a point lying at a distance r from the wire.


Gaussian surface cannot pass through discrete charge because ____________.


Which of the following statements is not true about Gauss’s law?


The Electric flux through the surface


(i)

(ii)

(iii)

(iv)

Five charges q1, q2, q3, q4, and q5 are fixed at their positions as shown in figure. S is a Gaussian surface. The Gauss’s law is given by `oint_s E.ds = q/ε_0`

Which of the following statements is correct?


If `oint_s` E.dS = 0 over a surface, then ______.

  1. the electric field inside the surface and on it is zero.
  2. the electric field inside the surface is necessarily uniform.
  3. the number of flux lines entering the surface must be equal to the number of flux lines leaving it.
  4. all charges must necessarily be outside the surface.

An arbitrary surface encloses a dipole. What is the electric flux through this surface?


If the total charge enclosed by a surface is zero, does it imply that the elecric field everywhere on the surface is zero? Conversely, if the electric field everywhere on a surface is zero, does it imply that net charge inside is zero.


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