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The electric field E due to any point ch...

The electric field E due to any point charge is defined as `E=underset (q rarr 0)lim F/q`, while q is the test charge and F is the force acting on it. What is the physical signification of `underset (q rarr 0)lim` in this expression?

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MODERN PUBLICATION-ELECTRIC FIELD-EXERCISE
  1. The electric field E due to any point charge is defined as E=underset ...

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  2. In defining electric field due to a point charge, the test charge has ...

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  3. A ball of charge q is plaed in a hollow conductive uncharged sphere. A...

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  4. A ball of charge q is plaed in a hollow conductive uncharged sphere. A...

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  5. A sphere of charge + Q is fixed in position. A smaller sphere of charg...

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  6. Graphically, represent the variation of electric field due to a point ...

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  7. Graphically, represent the variation of electric field due to a point ...

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  8. Graphically, represent the variation of electric field due to a point ...

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  9. Three point charges, each having a charge +10 C are placed on the thre...

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  10. Five point charges, each having a charge q are placed on the five cron...

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  11. A small metal ball of mass m is suspended from a thread of length l be...

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  12. A small metal ball of mass m is suspended from a thread of length l be...

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  13. What is the use of the concept of electric field intensity?

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  14. Establish the relation between electric field strength and force.

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  15. Derive an expression for electric field intensity at a distance r from...

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  16. Find the electric field intensity at any point on the axis of a unifor...

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  17. What is an electric dipole? Define electric dipole moment and give its...

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  18. Define the term electric dipole moment. Give its units Derive an expre...

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  19. Define electric field intensity at a point. Give its S.I. units. Deriv...

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  20. Define electric field intensity at a point. Give its S.I. units. Deriv...

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  21. Define electric field intensity at a point. Give its S.I. units. Deriv...

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