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(a) Derive and expression for the electr...

(a) Derive and expression for the electric field at any point on the equatorial line of an electric dipole.
(b) Two identical point charges, q each kept 2m apart in air. A third point charge Q of unknown magnitude and sign is placed on the line joining the charges such that the system remains in equilibrium. Find the position and nature of Q.

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MODERN PUBLICATION-ELECTRIC CHARGES AND FIELDS -Revision Exercises (Short Answer )
  1. When an electric dipole is held at an angle in a uniform electric ...

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

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

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

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

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

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

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

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

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  10. State Gauss's law in electrostatics. Applying Gauss's law derive the e...

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  11. Is coulomb's law in electrostatics valld in all situations ?

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  12. Two positive charges which are 0.1m apart repel each other with a fo...

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  13. Plot a graph showing the variation of coulomb force (F) versus ((1)/(r...

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  14. A charge Q is distributed uniformly on a ring of radius R as shown in...

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  15. State Gauss's law in electrostatics. Using this law derive an expressi...

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  16. A small metal sphere carrying charge +Q is located at the centre of a ...

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  17. Define electric dipole moment. Is it a scalar or a vector? Derive the ...

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  18. A dipole of moment vecp is placed in a uniform electric field vecE. Th...

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  19. (a) Three point charges q,-4q and 2q are placed at the vertices of an ...

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  20. Two point charges q(A)=3muC and q(B)=-3muC are located 0.2 m apart in ...

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