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Five balls numbered 1,2,3,4,and 5 are su...

Five balls numbered 1,2,3,4,and 5 are suspended using separated threads. The balls (1,2),(2,4) and (4,1) show electrostatic attraction while balls (2,3) and (4,5) show repulsion. Therefore, ball 1 must be

A

Positively charged

B

Negatively charged

C

Neutral

D

Made of metal

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ERRORLESS -ELECTROSTATICS -Ordinary Thinking Objective Questions (Electric Flux and Gauss.s Law)
  1. Five balls numbered 1,2,3,4,and 5 are suspended using separated thread...

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  2. A cylinder of radius R and length L is placed in a uniform electric fi...

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  3. Electric field at a point varies as r^(0) for

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  4. An electric charge q is placed at the centre of a cube of side l. The ...

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  5. Total electric flux coming out of a unit positive charge put in air is

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  6. For a given surface the Gauss's law is stated asoint vecE.dvecA=0. Fro...

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  7. A cube of side l is p laced in a uniform field E, where E=E hati. The ...

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  8. Eight dipoles of charges of magnitude e are placed inside a cube. The ...

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  9. A charge +q is placed at the mid point of a cube of side L. The electr...

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  10. A charge q is placed at the centre of the open end of a cylindrical ve...

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  11. It is not convenient to use a spherical Gaussian surface to find the e...

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  12. In case of infinite long wire electric field is proportional to

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  13. Electric charge is uniformly distributed along a long straight wire of...

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  14. The SI unit of electric flux is

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  15. q(1),q(2),q(3) and q(4) are point charges located at point as shown in...

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  16. Gauss’s law should be invalid if

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  17. The inward and outward electric flux for a closed surface unit of N-m^...

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  18. If a point charge q is placed at the centre of a cube, then find out f...

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  19. If a spherical conductor comes out from the closed surface of the sphe...

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  20. If the electric flux entering and leaving an enclosed surface respecti...

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  21. A charge q is located at the centre of a cube. The electric flux throu...

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