An electron with kinetic energy 1.60 keV circles in a plane perpendicular to a uniform magnetic field. The orbit radius is 24.0 cm.
a Find the speed of the electron.
b Find the Magnetic Field
The Attempt at a Solution
I first converted keV to Joules which came out to be 2.5635 e-16 J
I then made the equation to solve for v : v=sqrt(1/2mk)
But I came out with the velocity being e22 4.627 km/s which is not right