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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

Text Solution

Verified by Experts

The correct Answer is:
c
Let us consider `1` ball has any type of charge 1 and 2 must have different charges `2` and `4` must have different charges i.e., `1` and`4` must have same charges but electrostatics attraction is also present in `(1,4)` which is impossible.
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A2Z-ELECTRIC CHARGE, FIELD & FLUX-Section D - Chapter End Test
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  6. Three charges -q(1), +q(2) and -q(3) are placed as shown in the figure...

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  7. Two metal pieces having a potential difference of 800V are 0.02 m apar...

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  8. The electric field in a certain region is acting radially outwards and...

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  9. Two equal charges are separated by a distance d. A third charge placed...

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  10. A solid conducting sphere of radius a has a net positive charge 2Q. A ...

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  11. Two small spheres of masses M(1)and M(2) are suspended by weightless i...

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  12. Three similar charges +q are placed on 3 corners of an equilateral tri...

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

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  14. The following diagram shows the electric field lines between two oppos...

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  15. The magnitude of electric field intensity at point B(2,0,0) due to dip...

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  16. An electric dipole is placed in a uniform electric field vec(E ) of ma...

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  17. Two infinitely large charged planes having uniform suface charge densi...

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  18. Figure, shown above, shows three situations involving a charged partic...

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  19. There are three concentric thin spheres of radius a,b,c (agtbgtc). The...

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  20. A alpha particle is released from rest 10 cm from a large sheet carryi...

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  21. A ring of radius R has charge -Q distributed uniformly over it. Calcul...

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