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A body of mass one gram and carrying a c...

A body of mass one gram and carrying a charge `10^(-8)C` passes through two points `P` and `Q` .The electrostatic potential at `Q` is `OV`.The velocity of the body at `Q` is `0.2ms^(-1)` and at `P` is `sqrt(0.028)``ms^(-1)` .The potential at `P` is

A

150V

B

300V

C

600V

D

900V

Text Solution

Verified by Experts

The correct Answer is:
C
`(1)/(2)m [v_(Q)^(2) - v_(P)^(2)] = q [V_(P) -V_(Q)]`
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NARAYNA-ELECTROSTATIC POTENTIAL AND CAPACITANCE-Exercise-2(C.W)
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  3. A body of mass one gram and carrying a charge 10^(-8)C passes through ...

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  5. The closed distance of approach of an alpha- particle travelling with ...

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  6. Three point charges 1C, -2C and -2C are placed at the vertices of an e...

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  7. Two equal point charges are fixed at x=-a and x=+a on the x-axis. Anot...

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  8. Three equal charges Q are placed at the three corners of an equilatera...

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  9. An electric dipole of length 20 cm having +-3xx10^(-3) C charge placed...

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  10. A molecule of a substance has a permanent electric moment of magnitude...

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  11. Two opposite and equal chrages 4 xx 10^(-8) coulomb when placed 2 xx 1...

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  12. Two thin wire rings each having a radius R are placed at a distance d ...

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  13. Two metal spheres A and B have their capacities in the ratio 3:4 they ...

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  14. A conducting shell S1 having a charge Q is surrounded by an uncharged ...

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  15. A spherical charged conductor has surface charge density sigma.The int...

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  16. Figure shows three spherical and equipotential surface 1,2 and 3 round...

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  17. A half ring of radius r has a linear charge density lambda.The potenti...

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  18. A parallel plate condenser has initially air medium between the plates...

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  19. When a dielectric slab of thickness 4 cm is introduced between the pla...

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  20. The area of the positive plate is A(1) and the area of the negative pl...

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