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A proton und un electron move between tw...

A proton und un electron move between two ports having a potential difference V.
a. Which gains more energy
b. Define electron volt.
c. How is 1e V and 1 MeV related to joule?
d. Write the dimensional formula of electrostatic potential.

Text Solution

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Both gain the same energy
Work done=energy gain =Potential difference `xx " Charge"`
The p.d. and charge are same for each.
b. One eV is the kinetic energy acquired by an electron accelerated on an electric field of p.d. one volt.
c. 1MeV `=10^(6)eV =1.6 xx 10^(-13)J`
`1eV= 1.6 xx 10^(-19)J`
`d. [V]=([W])/([q])=([ML^(2) T^(-2)])/([1 xx T])=[M^(1) L^(2) T^(-3) I^(-1)]`
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NEW JOYTHI PUBLICATION-ELECTROSTATIC POTENTIAL AND CAPACITANCE-Evaluation Questions And Answers
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