Question

A doped silicon wafer has a thickness of $0.5mm$ and a Hall-coefficient of $2\times {10}^{-2}.$ If the current thorugh the wafer is $7.5mA,$ then the magnitue of hall voltage for a magnetic flux density of $0.2T$ is _____ $mV.$

• A. 60

Answer 1

The correct option is A 60
$\text{The Hall voltage is given by}$

$V=R_{H}IB/t$
where,
$R_H=\text{Hall coefficient}$

$t=\text{Wafer thickenss}\left(m\right)$

$I=\text{Current through water}\left(A\right)$

$B=\text{Magnetic flux density}T$

$V=\frac{2\times {10}^{-2}}{0.5\times {10}^{-3}}\times 7.5\times {10}^{-3}\times 0.2=0.06V=60mV$