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A drop of water of mass 18xx10^-3 g fall...

A drop of water of mass `18xx10^-3` g falls away from the bottom of a charged conducting sphere of radius 20 cm, carrying with it a charge of `10^(-9)C` and leaving on the sphere a uniformly distributed charge of` 2.5xx10^(-6)C`. What is the speed of the drop after it has fallen 30 cm? `(4piepsi_(0))^(-1)=9xx10^(9)JmC^(-2)`

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MODERN PUBLICATION-ELECTRIC POTENTIAL-EXERCISE
  1. A drop of water of mass 18xx10^-3 g falls away from the bottom of a ch...

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  2. Find an expression for line integral of electric intensity.

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  3. The work done in moving a positive charge on an equipotential surface ...

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  4. Show that the work done in moving a unit charge along a closed path is...

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  5. Derive an expression for electric potential at a point due to a point ...

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  6. Define electric potential. What is the SI unit of potential? Obtain an...

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  7. Define electric potential at a point. Derive an expression for the pot...

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  8. Derive an expression for the electric potential at a point along the a...

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

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  10. Deduce an expression for electric potential due to an electric dipole ...

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  11. Deduce an expression for electric potential due to an electric dipole ...

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  12. How is electric field at a point related to potential gradient?

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  13. How is electric field at a point related to potential gradient?

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  14. What is the shape of equipotential surfaces for a uniform electric fie...

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  15. Draw the equipotential surfaces due to an electric dipole. Locate the ...

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  16. Obtain an expression for potential energy of the configuration of thr...

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  17. Depict the equipotential surfaces for a system of two identical positi...

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  18. Deduce the expression for the potential energy of a system of two poin...

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  19. Two uniformly large parallel thin plates having charge densities +sigm...

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  20. Two point charges q1 and q2 are kept at a distance of r(12) in air. De...

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  21. Derive an expression for potential at a point due to a group of point ...

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