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What are the point charges?...

What are the point charges?

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(Attempt any ten of the following questions) Define one coulomb charge. Two point charges at a distance r in air exert a force F on each other. At what distance will these charges experience the same force F in a medium of dielectric constant k?

Give the statement of Coulomb's law for the force between two point charges. Write this law in vector notation for two point charges of same magnitude and opposite sign separated by a distacne r in vacuum.

A 100pF capacitor is charged by a potential difference of 100V. What is the amount of charge storeD? What is the electrostatic energy stored in the capacitor?

What are majority charge carries of a n- type semi conductor?

What is meant by potential at a point? Find an expression for potential at a point due to a point charge.