#initialisation of variable
from math import *
Rs=1;#resistance
l=90;#length
w=10;#width
e=1.3;
#calculation
n=l/w;#number
R=(n+e)*Rs;#resistance
#result
print"resistance is",round(R,2),"Kohm"
#initialisation of variable
from math import *
A=4*10**-8;#area
E=8.85*10**-14;#constant
V=5;#voltage
t1=1*10**-6;#nm
t2=5*10**-7;#nm
D1=3.9;#dielectric constant
D2=25;#dielectric constant
q=1.6*10**-19;#charge
#calculation
Qa=D1*E*A*V/t1;#charge
Na=Qa/q;#number
Qb=D2*E*A*V/t2;#charge
Nb=Qb/q;#number
#result
print"stored charge for Sio2 is",round(Qa,16),"C"
print"stored charge for Ta2O5 is",round(Qb,15),"C"
print"no. of electrons for Sio2 is",round(Na,2),"electrons"
print"no. of electrons for ta2O5 is",round(Nb,2),"electrons"
#initialisation of variable
from math import *
H=10**-8;#Henry
N=20;#turns
u=1.2*10**-6;#constant
#calculation
r=H/u/N**2;#radius
#result
print"required radius is",round(r*10**6,1),"micro-m"
#initialisation of variable
from math import *
l=5;#length
B=8;#MV/cm
#calculation
V=l*B;#voltage
#result
print"gate-to-source voltage is",round(V/10,2),"V"
#initialisation of variable
from math import *
t=1.5;#thickness
eo=3.9;
e1=7;
e2=25;#for Ta2O5
e3=80;#for TiO2
#calculation
Dn=t*e1/eo;#nitride
D1=t*e2/eo;#for Ta2O5
D2=t*e3/eo;#for TiO2
#result
print"oxide thickness for nitride is",round(Dn,2),"nm"
print"oxide thickness for Ta2O5 is",round(D1,2),"nm"
print"oxide thickness for TiO2 is",round(D2,2),"nm"
print"the answer for part 3 is incorrect in the textbook"