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The Gaussian surface for calculating the...

The Gaussian surface for calculating the electric field due to a charge distribution is

A

any closed surfasce around the charge distribution

B

any surface near the charge distribution

C

a spherical surface

D

a closed surface at a every point of which electric field has a normal component which is zero or a fixed value.

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The correct Answer is:
D
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Uniform Electric Field|Charge Distribution

The law goverening electrostatics is coulomb's law.In priciple coulomb's law can be used to compute electric field due to any charge configuation .In pracitce however it is a formidable task to compute electric field due to uniform charge distributions .For such cases Gauss proposed a theorem which states that ointbar(E).bar(ds)=(q)/(epsilon_(0)) where ds is an element of area directed across the outward normal for the surface at every point .The integral is called electric flux.Any convenient surface that we choose to evalute the surface integral is called the Gaussian surface. Gauss throrem in electrostatics states that electric flux oint(E.ds)=(q)/(epsilon_(0)) where S is the Gaussian surface ,the electric field E is due to all the charges

NARAYNA-ELECTRIC CHARGES AND FIELDS-C.U.Q
  1. Electric flux over a surface in an electric field

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  2. A charge Qis placed at the mouth of a conical flask. The flux of the e...

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  3. A charge Qis placed at the mouth of a conical flask. The flux of the e...

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  4. Electric field intensity at a point due to an infinite sheet of charge...

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  5. Two thin infinite parallel plates have uniform charge densities + sigm...

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  6. In the above question, if the sheets were thick and conducting , value...

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  7. In the above problem the value of E in the space outside the sheets is...

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  8. The Gaussian surface for calculating the electric field due to a charg...

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  9. The electric flux over a sphere of radius 1m is phi. If radius of the ...

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  10. A charge q is placed at the centre of a cube.What is the electric fl...

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  11. A charge Q is situated at the corner of a cube the electric flux passe...

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  12. A charge +q is placed at the mid point of a cube of side L. The electr...

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  13. A charge q is enclosed as shown, below the electric flux is

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  14. An ellipsoidal cavity is carved within a perfect conductor. A positive...

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  15. Two infinitely long thin straight wires having uniform linear charge d...

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  16. Find the total flux due to charge q associated with the given hemisphe...

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  17. Assertion. A metallic shield in the form of a hollow shell, can be bu...

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  18. A thin spherical shell of radius R has charge Q spread uniformly over ...

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  19. Three poistive charges of equal value q are placed at the vertices of ...

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  20. An uncharged metal sphere is placed between two equal and oppositely c...

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