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On being negatively charged, a soap bubb...

On being negatively charged, a soap bubble

A

expands

B

contracts

C

neither expands nor contracts

D

none of these

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CHETANA PUBLICATION-ELECTROSTATICS-EXERCISE
  1. Two point charges of A = + 5.0 mu C and B = -5.0 mu C are separated by...

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  2. The number of electrons removed from a body in order to produce positi...

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  3. On being negatively charged, a soap bubble

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  4. The Coulomb's repulsive force between two point charges placed at dist...

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  5. When a glass rod is rubbed with silk it gains positive charge, because

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  6. An electric dipole consists of two equal and opposite charges of magni...

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  7. Which of the following quantities is a vector quantity? A. intensity...

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  8. Two point charges of 2 coulomb and 6 coulomb repel each other with a f...

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  9. Static electricity can be produced by

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  10. The electric potential while moving along the lines of force

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  11. The Coulomb's law is valid for the charges which are

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  12. The unit of intensity of electric field is

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  13. Dielectric constant is

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  14. If a dielectric is placed between two charges in place of vacuum or ai...

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  15. If a body is charged by rubbing, its weight

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  16. The unit of dipole moment is

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  17. Two positive charges of same magnitude are kept 20 cm apart. A point b...

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  18. The electric intensity at a point at 10 cm from point charge is 5N//C....

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  19. Coulomb's force between two point charges separated by certain distanc...

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  20. The permittivity of medium is 26.55 xx 10^-12 C^2//Nm^2. The dielectri...

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