From b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b Mon Sep 17 00:00:00 2001 From: priyanka Date: Wed, 24 Jun 2015 15:03:17 +0530 Subject: initial commit / add all books --- 1538/CH18/EX18.3/Ex18_3.sce | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) create mode 100755 1538/CH18/EX18.3/Ex18_3.sce (limited to '1538/CH18/EX18.3/Ex18_3.sce') diff --git a/1538/CH18/EX18.3/Ex18_3.sce b/1538/CH18/EX18.3/Ex18_3.sce new file mode 100755 index 000000000..b8084d620 --- /dev/null +++ b/1538/CH18/EX18.3/Ex18_3.sce @@ -0,0 +1,21 @@ +//example-18.3 +//page no- 537 +//given +//conductivity of material +sigma=0.018 // per ohm m +//no of electrons +n=10^19 //electrons/m^3 +//voltage +V=0.16 //V +//thickness of material +t=0.29*10^-3 //m +//mass and charge of electron +m=9.1*10^-31 //kg +e=1.602*10^-19 //C +//electric feilf gradient +kie=V/t //V/m +//as we know that +//sigma=n*e*vd/kie +//so v +vd=sigma*kie/n/e //m/s +printf ("drift velocity of carriers is %f m/s",vd) -- cgit