The Hall effect in a p-type semiconductor under magnetic field B and current density J produces a Hall voltage of which sign on the side determined by which carrier?
ASign always positive regardless of doping type
BSign set by holes (opposite to n-type)
CSign equals zero for any semiconductor material
DSign determined only by the lattice phonons
Answer & Solution
Correct answer: B. Sign set by holes (opposite to n-type)
Hall: VH = (IB)/(n·q·t) for one carrier type. In p-type, holes deflect; Hall voltage has opposite polarity to n-type. Used to identify carrier type + density.
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