Radio Shack TRS-80 - Page 61

Don't necessarily shy away from
this one if electricity
doesn't
happen
to be your
bag.
Enough information is given
tq write
the
program,
and the
principle,
the
optimizing
of a
value, is applicable to many fields
of endeavor and is
little
short of
profound.
With
the values
given
in the schematic,
design, write and run
a program
which
will try out
values
of
load
resistance ranging
from 1 to
20
ohms, in
1 ohm increments,
and print the
answers to
the
following:
1. Value of Load Resistance
(from 1 to
20
ohms)
2.
Total circuit power
(circuit
current
squared, times
source
voltage)
I
2
*
10
3.
Power lost
in source (circuit
current squared,
times
source
resistance)
l
1
*
10
4.
Power delivered
to load
(circuit current
squared, times
load
resistance)
I
2
*
R
Note: Circuit current
is
found by
dividing
source
voltage
(120
volts)
by total circuit
resistance (load
resistance +
10
ohms
source resistance).
Everything
follows
Ohms
Law
(V
=
I*R) and
Watts Law (P
=
I*V)
GOOD LUCK!!!! Don't look
at
the
answer until
you've
got it whipped.
120
VOLTS
I
MHMMMKHimmHi
59