1 files changed, 14 insertions, 0 deletions
diff --git a/1694/CH7/EX7.4/EX7_4.sce b/1694/CH7/EX7.4/EX7_4.sce
new file mode 100644
index 000000000..3e7ee4d31
--- /dev/null
+++ b/1694/CH7/EX7.4/EX7_4.sce
@@ -0,0 +1,14 @@
+clear;
+clc;
+printf("\nEx7.4\n");
+//page no.-219
+//given
+e=1.6*10^-19;......//CHARGE IN C
+R=-0.0125;..........//HALL COEFFICIENT IN m^3/coulumb
+E=100;...............//ELECTRIC FIELD IN volt/m
+mu=0.36;.............//mobility
+n=1/(e*R).............//no. of charge carriers per m^3
+
+J=n*e*mu*E............//current density in ampere/m^2
+
+printf("\ncurrent density is 2880 A/m^2");