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What is earthing? How it is done? What i...

What is earthing? How it is done? What is its significance?

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MODERN PUBLICATION-ELECTRIC CHARGES AND FIELDS -Revision Exercises (Short Answer )
  1. Two point charges placed at a distance r in air experience a certain f...

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  2. Define conductor and insulator giving examples.

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  3. What is earthing? How it is done? What is its significance?

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  4. How can you charge a metal sphere negatively without touching it?

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  5. State and explain the principle fo superposition as applied to ele...

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  6. electric field || physical significance of electric field

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  7. Two positive point charges are 3 m apart their combined charge is 20 m...

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  8. Write the expression for electric field intensity at any point outside...

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  9. Does Coulomb's law of electric force obey Newton's third law of mo...

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  10. What do you mean by area vector? What is its direction?

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  11. Define electric flux. Write its SI unit. A charge q is enclosed by a ...

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  12. When an electric dipole is held at an angle in a uniform electric ...

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  13. Derive an expression for the intensity of the electric field at a poin...

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  14. (a) Derive and expression for the electric field at any point on the e...

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  15. Give the expression for torque experienced by an electric dipole in an...

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  16. A positive point charge (+q) is kept in the vicinity of an uncharged c...

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  17. State and prove Gauss's law in electrostatics.

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  18. Using Gauss's law, derive an expression for the electric field intens...

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  19. Calculate distance of the point from the centre of a uniformly charged...

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  20. Draw a graph of electric field E(r) with distance r from the centre of...

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