initial commit / add all books

2 files changed, 13 insertions, 0 deletions

diff --git a/608/CH13/EX13.20/13_20.jpg b/608/CH13/EX13.20/13_20.jpg
new file mode 100755
index 000000000..a22bdd4f6
--- /dev/null
+++ b/608/CH13/EX13.20/13_20.jpg
diff --git a/608/CH13/EX13.20/13_20.sce b/608/CH13/EX13.20/13_20.sce
new file mode 100755
index 000000000..c9542b71e
--- /dev/null
+++ b/608/CH13/EX13.20/13_20.sce
@@ -0,0 +1,13 @@
+//Problem 13.20: The circuit diagram of Figure 13.48 shows dry cells of source e.m.f. 6 V, and internal resistance 2.5 ohm. If the load resistance RL is varied from 0 to 5 ohm in 0.5 ohm  steps, calculate the power dissipated by the load in each case. Plot a graph of RL (horizontally) against power (vertically) and determine the maximum power dissipated.

+

+//initializing the variables:

+V = 6; // in volts

+r = 2.5; // in ohms

+

+//calculation:

+RL=(0:0.5:5)';

+function [y]=f(RL)

+    y = RL*(V/(r + RL))^2;

+endfunction

+fplot2d(RL, f)

+xtitle("graph of (RL) against power(P)", "RL(ohm)", "P(W)")
\ No newline at end of file