A Si sample in thermal equilibrium at 300 K, with dimensions of width 0.05 cm, length 0.5 cm and thickness 0.01 cm, is provided with contacts as required for Hall - Effect measurements and placed in a 2.5 x 102 T magnetic field. When a potential of 2.2 V is applied along the length of the sample, a current of magnitude 2.5 mA is observed and a Hall voltage of - 4.4 mV is measured. a) Is the sample n-type or p-type? b) Determine the majority carrier concentration and Hall constant for this sample.

A Si sample in thermal equilibrium at 300 K, with dimensions of width 0.05 cm, length 0.5 cm and thickness 0.01 cm, is provided with contacts as required for Hall - Effect measurements and placed in a 2.5 x 102 T magnetic field. When a potential of 2.2 V is applied along the length of the sample, a current of magnitude 2.5 mA is observed and a Hall voltage of - 4.4 mV is measured. a) Is the sample n-type or p-type? b) Determine the majority carrier concentration and Hall constant for this sample.