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MHT CET 2021 (22 Sep, Shift 2) · Motion of Charges in an Electric Field

Motion of Charges in an Electric Field question from MHT CET 2021 (22 Sep, Shift 2)

Q24MHT CET 2021 · 22 SEP · SHIFT 2Easy

Motion of Charges in an Electric Field

An electron of mass ' $m$ ' and charge ' $q$ ' is accelerated from rest in a uniform electric field of strength ' $E$ '. The velocity acquired by the electron when it travels a distance ' $L$ ' is

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Answer: (c)

$a = \frac{qE}{m}$ ; from rest, $v^2 = 2aL$ .
$v = \sqrt{\frac{2qEL}{m}}$
So the answer is (c).

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