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Define electric dipole. Show that the el...

Define electric dipole. Show that the electric field is the negative gradient of its potential.

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Electric dipole is a pair of equal and opposite point charges separated by a finite distance.
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a) Define an ideal electric dipole. Give an example. b) Derive an expression for the torque experienced by an electric dipole in a uniform electric field. What is net force acting on this dipole. c) An electric dipole of length 2cm is placed with its axis making an angle of 60^@ with respect to uniform electric field of 10^5N//C . If it experiences a torque of 8sqrt()3 Nm, calculate the (i) magnitude of charge on the dipole, and its potential energy

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MODERN PUBLICATION-ELECTROSTATIC POTENTIAL AND CAPACITANCE -Revision Exercises (Short Answer Questions)
  1. Two identical positively charged particles P and Q are placed between...

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  2. The given figure shows equipotential surfaces is an electric field. Th...

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  3. Define electric dipole. Show that the electric field is the negative g...

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  4. The electric potential at a point P due to two charges in fig (a) is V...

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  5. Deduce an expression for the electric potential due to an electric dip...

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  6. Derive an expression for the potential energy of an electric dipole pl...

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  7. What are equipotential surfaces? Give their properties.

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

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  9. Work done in moving a positive charge on an equipotential surafce is

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  10. (i) On what factors does the capacitance of a capacitor depend? (ii)...

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  11. A test charge q is moved without acceleration from A to C along the pa...

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  12. Obtain the expression for the energy stored in a parallel plate capaci...

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  13. A charge Q is distributed over two concentric hollow spheres of radii ...

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  14. At what position of an electric dipole placed in an electrostatic fiel...

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  15. Find the potential energy associated with a charge q if it were presen...

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  16. Why should electrostatic field be zero inside a conductor ?

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  17. Show that the electric field at the surface of a charged conductor is ...

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  18. How does a non-polar dielectric develop a net dipole moment when place...

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  19. What will be the work done in taking a point charge from a point X to ...

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  20. What is the relation between dielectric constant and electric susce...

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