How much energy will an electron gain if it moves through a potential difference of 1.0 V?

a. 1.0 eV

b. 0.5 eV

c. 2.0 eV

d. 1.6 x 10-19 eV

a. 1.0 eV

Explanation:

Given that

Voltage difference,ΔV = 1 V

From work power energy

Work = Change in the kinetic energy

We know that work on the charge W = q ΔV

For electron, e = 1.6 x 10⁻¹⁹ C

q=e = 1 x 1.6 x 10⁻¹⁹ C

Change in the kinetic energy

ΔKE = q ΔV

Now by putting the values

ΔKE = 1 x 1.6 x 10⁻¹⁹ x 1 C. V

We can also say that

ΔKE = 1 e. V

Therefore the answer will be a.

a). 1.0 eV