Concept explainers
The Hall effect is to be used to find the sign of charge carries in a semiconductor sample. The probe is placed between Own poles of a magnet so that magnetic field Is pointed up. A current is passed through a rectangular sample placed horizizontally. As current is passed through the sample in the east direction, the north side of the sample is found to be at a higher potential than the south side. Decide if the number density of charge carriers is positively or negatively charged.
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