Circuit Set Up
1 Power Supply = Battery
1 fixed Resistor = Load
1 Resistor Substitution Box = Cable
2 DMM
Calculation the Theoretical Value for Load Resistance
Theoretical Resistance Value using Color Code
Assembly Components Ratings:
Resistor Box Rating = 1W
Power Supply Ratings:
Max Supply Voltage = 12V
Max Supply Current = 2A
EXPERIMENT
Total Cable Resistance= 40+30+20+4+3+2+1=100 Ohms
The load is receiving 11V from a battery providing 11.14mA
CALCULATIONS
What's the amount of time the battery can supply this load? 71.81hrs
What's the distribution efficiency of this circuit? 90.3%
CONCLUSION
The load receives its minimum of 11V from a battery providing 11.14mA through a cable resistance of 100Ohms. It takes about 72 hours before the load completely discharges. This circuit is about 91% efficient. The load's power is only 1/4W while the cable has 1W, we did not exceed the power capability of the resistor box. It was also observed that a longer cable would create a greater resistance.
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