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Two point charge +2 C and +6 C repel eac...

Two point charge `+2 C` and `+6 C` repel each other with a force of `12 N` . If a charge of `-4 C` is given to each other of these charges , the force will now be

A

`4 xx 10^(3)N` repulsion

B

`4 xx 10^( 2)N` repulsion

C

`6 xx 10^(3)N` attraction

D

`4 xx 10^(3)N` attraction

Text Solution

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The correct Answer is:
D
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AAKASH SERIES-ELECTRIC CHARGES AND FIELDS-Exercise-II
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  2. Two point charages placed at a distance r. in the air experiene a cert...

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  3. Two point charge +2 C and +6 C repel each other with a force of 12 N ....

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  4. Two small balls having equal positive charge Q C on each are suspended...

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  5. The force between two similar charges of magnitude 2C each separated b...

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  6. Figure shows two shells of masses m1 and m2 . The shells are concentr...

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  7. Deuteron and alpha-particle are put 1 A^(@) apart in Air. Magnitude of...

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  8. Two point charges Q and -3Q are placed at some distance apart. If the ...

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  9. The electric field at (30, 30) cm due to a charge of -8nC at the origi...

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  10. Two charges 4 xx 10^(-9)C and -16 xx 10^(-9)C are separated by a dista...

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  11. The number of electrons to be put on a spherical conductor of radius 0...

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  12. The magnitude of electric field intensity at a distance x due to charg...

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  13. Three equal charges, each +q are placed on the corners of an equilate...

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  14. The electric field in a region is radially outward with magnitude E = ...

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  15. A sphere of mass 50gm is suspended by a string in an electric field of...

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  16. A and B are two points separately by a distance 5cm. Two charges 10 mu...

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  17. At the corners A, B, C of a square ABCD, charges 10mC, -20 m C and 10m...

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  18. A charged oil drop is suspended in uniform field of 3 xx 10^(4) V//m s...

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  19. A particle of mass .m. and charge q is placed at rest in a uniform ele...

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  20. A proton and an alpha-particle start from rest in a uniform electric f...

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