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A charge of 20 xx 10^(-9) C is placed at...

A charge of `20 xx 10^(-9) C` is placed at a point . What work will be requried (a) to bring 1 C of positive charge from infinity to a distance of 10 cm from it ? (b) to carry a charge of 5 C once compelety round it in a circle of radius 5 cm ? Given reasons .

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NN GHOSH-ELECTRIC FIELD AND POTENIAL-EXERCISE-B
  1. A charge of 20 xx 10^(-9) C is placed at a point . What work will be ...

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  2. A certain charge Q is divided into two parts q and Q-q, wheich are the...

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  3. A uniform electric field exists in the region between toe oppositely c...

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  4. Two brass plates are arranged horizontally , one 2 cm above the other....

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  5. Three charges -1 mu C,2 muC "and" 3 nuCare placed respectively at the ...

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  6. Three small balls, each of mass 10 g , are suspended from a common po...

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  7. In the Bohr model of the hydrogen atom, an electron revolves in a circ...

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  8. Two equal positive point charges are sperated by a distance of 2a. A p...

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  9. An alpha particle of velocity 1.6xx10^(7) ms^(-1) approaches a gold nu...

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  10. Three charges -q, +q and -q are placed along a st. line at equal dista...

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  11. Two concentric spherical shells of conducting material and of radii a ...

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  12. Two equal charges, +Q each, are at a distance r from each other. A thi...

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  13. An infinite number of charges, each equal to q are arranged in a line ...

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  14. Four charges +q,+2q,+3q and +4q are placed at the four corners ABCD of...

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  15. Two identical positive charges are placed at the diagonally opposite c...

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  16. A charge Q is placed at each of the two opposite corners of a square ...

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  17. A thin copper ring of radius a is charged with q units of electricity....

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  18. A an electron is placed at the centre of the copper ring of problem 37...

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  19. A thin half- ring of radiusb 20 cm is uniformly charged with a tot...

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  20. A thin nonconducting ring of radius r has a linear charge density q=q0...

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  21. A thin wire ring of radius r has an electric charge q. What is the ten...

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