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PHYS3050 Lab 2
Simple Passive Networks
By: Aysar Khalid (209728866)
Lab Partner: Hassan Chehaitli
Submitted on: October
28
th
, 2010
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View Full DocumentObjective
The aim for this lab was to learn about voltage division using 2 resistors and a DC power supply.
And to learn about the Thévenin equivalent circuit using load resistors.
2.1 Voltage Division
Figure 1 Circuit diagram for 1st circuit
Figure 2 Circuit diagram for 2nd circuit
After assembling both circuits and measuring V
DC
and V
BC
and calculating V
AB
(see end
pages for calculation and rough work).
It was found that the measured voltage of V
AB
was off by
about 1V.
This was unexpected.
The values of V
BC
were found to be different for both circuits.
This is potentially because the Digital Multimeter is not stable at very high resistance values and
will +/ 1V in its accuracy to measure.
Another potential reason was maybe because since
current favours a path with the least resistance.
It is likely that more current will go through
the Multimeter (which tends to have a resistance of 5 MOhm) rather than the resistor of 10
MOhm, since the current will favour a pathway with less resistance, we will have some
deficiency in current via the actual pathway we are trying to measuring the current through.
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