A) The uniform purely axial magnetic induction required by the experiment in a volume large enough to accommodate the Lorentz Tube is produced by the Helmholtz Coils. What is the magnetic induction due to a coil current 1.5 Ampere? convert the result in the still popular non-SI unit Gauss (1 Tesla = 10^4 Gauss).
B) In a single measurement student applied electron gun accelerating voltage of 240 V and measured electron orbital diameter of 8 cm. The applied magnetic induction was the same as in Problem 1. What specific charge of the electron follows from the above measurement?