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Draw the pattern of electric lines, when...

Draw the pattern of electric lines, when a point charge - Q is kept near an uncharged coducting plate.

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The pattern is as shown.
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(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.

MODERN PUBLICATION-ELECTRIC CHARGES AND FIELDS -Revision Exercises (Very short)
  1. Who introduced the concept of positive and negative charges?

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  2. Mention one similarity between Coulomb force and gravitational force a...

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  3. Draw the pattern of electric lines, when a point charge - Q is kept ne...

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  4. What is the name of famous experiment, which established the quantum n...

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  5. Can a body have a charge of 1.0xx10^(-19) C ?

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  6. Write two differences between charge and mass.

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  7. State Coulomb's law.

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  8. Define 1 statcoulomb.

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  9. What is the Importance of expressing coulomb's law in vector from ?

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  10. Write the expression for Coulomb's law for force between two charged p...

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  11. Two charges are at distance (d) apart in air Coulomb force between the...

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  12. Define dielectric constant of a medium in terms of force between elect...

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  13. State Coulomb's law of electric force between two charged bodies.

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

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  15. What will be the electrical permittivity of medium whose dielectric co...

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  16. The dielectric constant of water is 80. What will be its electrical pe...

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  17. Why does the electric field inside a dielectric decrease when it is p...

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  18. Define linear charge density and write its SI units.

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  19. Two large conduction spheres carrying charges Q(1) and Q(2) are brough...

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  20. Define volume charge density and write its SI unit.

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