Ch-21 : Transducers

Page No. 632 Example 21.1.

In [1]:
u=10.*200 # in cm**2/V-s
print "The electron mobility, un = sigma*RH =%0.2f cm**2/V-s"%u

The electron mobility, un = sigma*RH =2000.00 cm**2/V-s

Page No. 633 Example 21.2.

In [3]:
n=10./((50*10**-4)*(1.6*10**-19))  # m**-3
print "We know that the electron mobilty, un = sigma/nq"
print "Therefore, the electron concentration,"
print "           n = sigma / uq =%0.2e m**-3"%n

We know that the electron mobilty, un = sigma/nq
Therefore, the electron concentration,
           n = sigma / uq =1.25e+22 m**-3

Page No. 634 Example 21.3.

In [4]:
n=(1.2*20)/(60*(1.6*10**-19)*(0.5*10**-3)) #  in m**3
print "We know that the number of conduction electrons, i.e. electron density,"
print "       n = B*I/VH*q*w =%0.2e m**3"%n

We know that the number of conduction electrons, i.e. electron density,
       n = B*I/VH*q*w =5.00e+21 m**3