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A proton is moving away from an electron...

A proton is moving away from an electron, then find the change in potential energy of the system.

A

decreases

B

increases

C

remains constant

D

may decrease or increase

Text Solution

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The correct Answer is:
A, C
Potential energy of system made of proton and election,
`U = (k(e)(-e))/(r) =- (ke^(2))/(r)`
`:.` Negative value of U decreases with increase in r.
Hence potential energy increases .
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KUMAR PRAKASHAN-ELECTROSTATIC POTENTIAL AND CAPACITANCE-Section D ( Multiple Choice Questions (MCQs) )
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  3. A proton is moving away from an electron, then find the change in pote...

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  5. The line integral or an electric field along the circumference of a ci...

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  6. 2C electric charge Is displaced from a point of electric potential -20...

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  7. The work done by carrying, unit positive charge in an electric field u...

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  8. Which one of the following is not a unit of electric potential ?

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  9. Give dimensional formula of electric potential.

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  10. A particle having mass m and charge q is , rest. On applying a uniform...

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  11. For a uniform electric field vecE = E(0)(hati), if the electric potent...

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  12. The work done by the charge Q through displacement Delta vecr = a hati...

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  13. What is the diameter of sphere of 4V potential kept near the points si...

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  14. Two spheres or different radii are given equal amount of charge. The ...

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  15. Charges on two spherical shells of radius r(1) and r(2) are same, then...

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  16. Two metallic sphenrs of radil R(1) and R(2) are charged. Now they are ...

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  17. Electric field on surfaces of two spheres of radius r(1) and r(2) are...

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  18. Surface churgc densities on the spheres of radius r(1) and r(2) are s...

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  19. Potenlials of points P and Q are 10V and -4 V respectively. Work done...

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  20. A point P al a certain distance from charge Q has electric potential 6...

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