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Q.

The mass of an electron is m, its charge e and it is accelerated from rest through a potential difference V. The kinetic energy of the electron in joules will be :

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a

none of these

b

V

c

eV

d

meV

answer is B.

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Detailed Solution

KE of charged particle = change x pot. difference.

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The mass of an electron is m, its charge e and it is accelerated from rest through a potential difference V. The kinetic energy of the electron in joules will be :