A Hall-effect probe operates with a i = A current. When the probe is placed in a uniform magnetic field of magnitude b = T, it produces a Hall voltage of v = V.
(a) When it is used to measure an unknown magnetic field, the Hall voltage is v1 = . What is the magnitude of the unknown field?
(b) The thickness of the probe in the direction of t = m. Find the density of the charge carriers, each of which has charge of magnitude e.
q =