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(a) Two protons are placed at some separ...

(a) Two protons are placed at some separation in vacuum. Find the ratio of electric and gravitational force acting between them.
(b) Two point charges are placed at separation `3 m` in vacuum. What can be the minimum force between them.
(c ) A charge `Q` is to be divided on two objects. What should be the value of the charges in the objects so that the force between them is maximum ?
(d) Two insulating small spheres are rubbed against each other and placed `1.6 cm` apart. If they attract each other with a force of `0.9 N`, how many electrons were transferred from one sphere to the other during rubbing ?

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  2. An electric dipole is placed at an angle of 30^(@) with an electric fi...

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  3. The electric field in a certain region is acting radially outward and ...

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  4. A Gaussian surface in the cylinder of cross-section pia^(2) and length...

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  5. A total charge of 5 muC is distributed uniformly on the surface of the...

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  6. Two small spherical shells a and B are given positive charges of 9 C a...

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  7. A point charge q is situated at a distance r from one end of a thin co...

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  8. When 10^(19) electrons are removed from a neutral metal plate through ...

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  9. A charge Q is uniformly distributed over a large plastic plate. The el...

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  10. A uniform electric field E is created between two parallel ., charge...

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  11. The line A A' is on charged infinite conducting plane which is perpend...

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  12. The electric field at a point on equatorial of a dipole and direction ...

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  13. Pick out the statement which is incorrect?

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  14. An electron of mass m(e ) initially at rest moves through a certain di...

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  15. Two charges 10 muC and - 10 muC are placed at points A. and B separate...

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  16. A uniform electric field exists in space. Find the flux of this field...

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  17. An inclined plane of length 5.60 m making an angle of 45^(@) with the ...

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  18. Two charge spheres separated at a distance d exert a force F on each o...

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  19. If a charge on the body is 1 nC, then how many electrons are present o...

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  20. Electric field at a point of distance r from a uniformly charged wire ...

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  21. Two equal and opposite charges of masses m(1) and m(2) are accelerated...

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