Question

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

Answer 1

a. 1.0 eV

Step-by-step 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