A charged particle is accelerated through a potential difference of 12kV and acquires a speed of 1.0 x 106m/*. It is then injected perpendicularly into a magnetic field of strength 0.2T. Find the radius of the circle described by it.
V = 12KV E = V/I
Now, F = qE = qV/I or a = F/m = qV/ml
