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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

Must be positively charged

B

Must be nagatively charged

C

May be neutral

D

Must be made of metal

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The correct Answer is:
C
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RESONANCE-ELECTROSTATICS-Exercise - 2 Part - I
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  2. Calculate the electric potential at the center of a square of side sq...

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  3. Five balls numbered 1,2,3,4,and 5 are suspended using separated thread...

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  4. Two point charges of same magnitude and opposite sign are fixed at poi...

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  5. Two point charges a and b whose magnitude are same, positioned at a ce...

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  6. A solid sphere of radius R has a volume charge density rho=rho(0) r^(2...

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  7. A charge particle 'q' is shot towards another charged particle 'Q' whi...

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  8. For an infinite line of charge having linear charge density lambda lyi...

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  9. Two short electric dipole are placed as shown. The energy of electric ...

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  10. A charge q is placed at the centre of the cubical vessel (with one fac...

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  11. Electric field intensity at a point due to an infinite sheet of charge...

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  12. A dipole having dipole moment p is placed in front of a solid uncharge...

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  13. The net charge given to an isolated conducting solid sphere :

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  14. The net charge given to a solid insulating sphere :

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  15. A charge Q is kept at the centre of a conducting sphere of inner radiu...

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  16. Two uniformly charged non-conducting hemispherical shells each having ...

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  17. A solid metallic sphere has a charge +3Q. Concentric with this sphere ...

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  18. A charge 'q' is placed at the centre of a conducting spherical shell o...

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  19. In the above question, if Q' is removed then which option is correct :

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  20. Two identical charged spheres suspended from a common point by two mas...

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