PHYS 2240 – Section 506
03/01/2017
E
XPERIMENT
5
S
ERIES
AND
P
ARALLEL
C
IRCUITS
Maria Pavloschi

Abstraction
The goal of this experiment is to calculate the equivalent, theoretical, and experimental resistance of
series and parallel circuits. After constructing each of the four different circuits (series, parallel, simple
series parallel, and complex series parallel), we used the Signal Generator to record the output in mA.
We matched that i (Measured) value to the closest A (Corrected) value from the previous table. Then, we
took the difference between the two (values between -3 and -4) and we subtracted it from the i
(Measured), giving us the result of i (Corrected) in mA. We then used Ohm’s Law to find the measured
resistance and finally the theoretical resistance, which involved adding the measured resistances. We
calculated the percent differences after performing the experiments (values between -3 and 1). Our
percent error was less than 1; results were not heavily affected.
Introduction
The significance of this experiment is to comprehend series and parallel circuits. Objectives include
analyzing how to assemble the circuits, while computing their equivalent, theoretical, and experimental
resistances. The voltage and current of the circuits must be measured in order to find the experimental
resistance.
A resistor, using resistance
R
and current
I
to measure the voltage
V
, is one of the rare devices that obey
Ohm’s Law.
Equation 1
V = IR
(Ohm’s Law)
It is possible to connect two or more resistors in series or parallel. An equivalent resistor can replace a
more complicated circuit by generating the same total current while applying the same total voltage.