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Coulomb's law is correct for......distan...

Coulomb's law is correct for......distance.

A

all

B

less than `10^(-15)`m

C

greater than `10^(-15)`m and less than `10^(18)`m

D

greater than `10^18`m

Text Solution

Verified by Experts

For distance less than `10^(-15)`m, nuclear forces are acting and for distance greater than `10^18`m, Coulomb force is approximately zero.
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KUMAR PRAKASHAN-ELECTRIC CHARGES AND FIELDS -SECTION D (MULTIPLE CHOICE QUESTIONS (MCQS)) (MCQS FROM .DARPAN. BASED ON TEXTBOOK) (ELECTROSTATIC ELECTRIC CHARGE AND FRICTIONAL ELECTRICAL CHARGE)
  1. Value of Coulombian constant in CGS unit is

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  2. If Coulomb's law is represented by F=kq(1)q(2) r^(n) , then n = ......

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  3. Coulomb's law is correct for......distance.

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  4. The graph which represents the correct relation between Coulomb force ...

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  5. Electric force on alpha-particle placed in electric Field of 20 xx 10^...

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  6. Value of dielectric constant of metal is.......

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  7. S.I. unit of permittivity (e0) ......

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  8. The value of permittivity of vaccum is 8.85 xx 10^(-12) C^(2)N^(-1) m^...

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  9. Two spheres carrying charge q are hanging from a same point of suspens...

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  10. If two opposite electric charges having same magnitude are 10 cm away ...

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  11. A proton is 1836 times heavier than an electron. If the repulsive forc...

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  12. The position vectors of two point charges of 2 nC each are (2hati + 3h...

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  13. The force of repulsion between two like or point charges + 2C and + 6C...

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  14. The force of repulsion between two charges +1 and 6C is 12N. A third c...

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  15. Two particles of equal mass m and charge t are placed at a distance 16...

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  16. Three identical charges are placed on three vertices of a square. If t...

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  17. The radius of a conducting spherical shell is 10 mm and a 100 muC cha...

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  18. An electron falls freely in electric field of 9.1 xx 10^3 NC^(-1), the...

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  19. One conducting metal sphere contains 10^23 atoms. If from 0.1 % atoms ...

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  20. Two charged particles of equal charges are placed 1 m apart. The initi...

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