If a free electron moves through a potential difference of 1kV then the energy gained by the electro...........

General Science (NDA) Physics

Download Solution PDF

If a free electron moves through a potential difference of 1kV, then the energy gained by the electron is given by

1.6 × 10^-19 J

1.6 × 10^-16 J

1 × 10^-19 J

1 × 10^-16 J

Explanation:

Option2
Since the electron moves through a potential difference, the gain in kinetic energy will be equal to the Potential energy lost by the electron. The energy can be given by the formula E=VQ, where 'E' represents potential energy in joules, and 'Q' represents charge in coulombs.
E=(1 kV)(1.6 x 10^-19J)
E= 1.6 x 10^-16J