1 files changed, 9 insertions, 0 deletions
diff --git a/3020/CH18/EX18.22/ex18_22.sce b/3020/CH18/EX18.22/ex18_22.sce
new file mode 100755
index 000000000..38a90e4b2
--- /dev/null
+++ b/3020/CH18/EX18.22/ex18_22.sce
@@ -0,0 +1,9 @@
+clc;
+clear all;
+Rh=3.66e-11;//hall coefficient in m^3/(A*s)
+sigma=112e7;//conductivity in ohm^-1* m^-1
+e=1.6e-19;
+n=3*%pi/(8*Rh*e);//concentration of electron in m^-3
+disp('m^-3',n,'concentration of electron:')
+ue=sigma/(n*e);//elctron mobility at room temperature
+disp('m^2/(V*s)',ue,'elctron mobility at room temperature is:');