An X-ray tube is operated at 15 kV . Calculate the upper limit of the speed of the electrons striking the target.

Step-by-step solution

The maximum kinetic energy of an electron accelerated through a potential difference of V volt is 1 2 mv ²= eV array l maximum velocity v = 2 eV m v = 2 1.6 10⁻¹⁹ 15000 9.1 10⁻³¹ v =7.26 10⁷ ~m / s array