1 files changed, 11 insertions, 0 deletions
diff --git a/3669/CH8/EX8.13/13.sce b/3669/CH8/EX8.13/13.sce
new file mode 100644
index 000000000..4ed2f0536
--- /dev/null
+++ b/3669/CH8/EX8.13/13.sce
@@ -0,0 +1,11 @@
+
+//Variable declaration
+mewn=0.35;     //mobility of electrons(m**2/Vs)
+e=1.602*10**-19;
+rho=0.2;    //resistivity(ohm m)
+
+//Calculation
+n=1/(rho*e*mewn);      //density of donor atoms
+
+//Result
+printf('density of donor atoms is %0.3f  *10**19 electrons/m**3   \n',(n/10**19))
+\ No newline at end of file