import math
# given data
A=0.25 # area in m^2
d=0.5 # distance between electrodes in m
B=1.8 # flux density in Wb/m^2
u=1200.0 # average gas velocity in m/s
sigma=10.0 # mho/m
Vo=B*u*d # in Volts
Pmax=1*sigma*(u**2)*(B**2)*A*d/(4.0*10**6) # in MW
print "Maximum Power output",Pmax,"MW"