Question

An electron is accelerated through a potential difference of 5V. Find the energy gained

by the electron in S.I. unit.​

Answer 1

Correct Question:-

An electron is accelerated through a potential difference of 5V. Find the kinetic energy gained by the electron.

Answer:-

• Potential Difference=V=5V

We know that

$\boxed{\sf Kinetic\:Energy=\dfrac{1}{2}mv^2}$

Here

$\\ \qquad\sf\longmapsto \dfrac{1}{2}mv^2=eV$

$\\ \qquad\sf\longmapsto Kinetic\:Energy=e\times 5V$

$\\ \qquad\sf\longmapsto Kinetic \:energy=5eV$

Answer 2

Answer:

Potential differences =5v

Charge contain by an electron =1.6x10*-19

Potential Differences = Energy (work done)/charge

= 5v = Energy / 1.6x10*-19

=5x1.6x10*-19=energy

=8x10*-19 J = Energy

Hence 8x10*-19 J energy gained by the eloctron.