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A charge Q is distributed uniformly on a...

A charge `Q` is distributed uniformly on a ring of radius `R` as shown in the following diagrams. Find the electric potential at the center `O` of the ring.
(a)

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MODERN PUBLICATION-ELECTRIC CHARGES AND FIELDS -Revision Exercises (Short Answer )
  1. Calculate distance of the point from the centre of a uniformly charged...

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

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

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

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

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

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

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

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

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

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

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

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

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

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  15. Two point charges q(A) = 3 mu C and q(B) = -3 muC are located 20 cm ...

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  16. Obtain the expression for the torque vectau experienced by an electric...

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  17. Use Gauss' theorem to find the electric field due to a uniformly charg...

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  18. Define dielectric constant. Two charges +-20xx10^(-6)C, placed 2 mm ap...

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  19. The volume charge density within a volume V is rho(r). What is the for...

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  20. What is the total charge enclosed by a closed surface if the electric ...

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