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The mass of a metal sphere charged with ...

The mass of a metal sphere charged with `+20` esu is 2g. Another smaller sphere with `-128` esu of charge is suspended with a thread. The former sphere, just below this smaller one, is at rest. What is the distance between the centres of the two spheres? `g="980 cm . s"^(-2)`

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The correct Answer is:
1.142 cm
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CHHAYA PUBLICATION-ELECTRIC FIELD-EXERCISE (PROBLEM SET -II)
  1. The charge of one of two small charged conductors is twice that of the...

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  2. Two point charges +4 esu and +9 esu are placed 10 cm apart. At what po...

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  3. The mass of a metal sphere charged with +20 esu is 2g. Another smaller...

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  4. Three charges are placed in vacuum on a horizontal plane. The magnitud...

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  5. Two insulated metal spheres of the same size are charged with -15 esu ...

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  6. Two sphere M and N, having charge q(1) and q(2) are kept at some dista...

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  7. To keep a water drop of charge 1.0xx10^(-7)muC and mass 10mug in equil...

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  8. A particle of mass 4 g and charge 10 esu is placed in a uniform electr...

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  9. Two points having charges q(1) and q(2) are placed at the coordinates ...

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  10. An electron and a proton both are allowed to fall from rest through an...

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  11. Charge of a circular ring of radius 20 cm is 100muC. Calculate the ele...

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  12. Two charges +q and -q separated by a distance of 3xx10^(-12)m in air f...

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  13. The charge of an electric dipole is 10muC and length 20 mm. It is plac...

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  14. An electric dipole is formed by the two equal and opposite charges, 6n...

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  15. Charges of an electric dipole are 8muC and -8muC. Coordinates of those...

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  16. In a certain place, an electric field of intensity 4hatj+3hatkN.C^(-1)...

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  17. A spherical shell of radius 10 cm has 10muC charge. Calculate the elec...

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  18. A straight wire of length 30 cm has 15muC charge. Calculate the electr...

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  19. Due to the presence of a charge at the centre of a sphere of radius 10...

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