# LabReport5_Aldhurais-Samir.docx - PHYS 2240 u2013 Section...

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PHYS 2240 – Section 504 02/26/2019 E XPERIMENT 5 S ERIES AND P ARALLEL C IRCUITS Aldhurais, A. Samir
ABSTRACT: In this experiment, we measure and calculate the resistance (theoretical, experimental, and equivalent) and then the corrected resistance of four circuits. The values we found were 900 Ω, 184 Ω, 291 Ω, and 367 Ω with percent difference 5.79%, 9.76%, 1.5%, and 1.6% respectively with an average difference of 4.66%. INTRODUCTION: The experiment provides step-by-step instructions on how to construct, implement series and parallel circuits, and compute their resistance (equivalent, experimental, and theoretical). This procedure allows us to derive and figure out the resistance R (measured in Ohm) through the values of the current I (measured in Amp) and voltage (measured in Volt). This can be obtained by first finding the equivalent Resistance through: R eq = R 1 + R 2 (two or more resistors in series) and 1 R eq = 1 R 1 + 1 R 2 (two or more resistors parallel circuits) When having to deal with simple and complex circuits at the same time, we utilized a combination of both equations above or we can use another equation to calculate the equivalent Resistance: R eq = R 1 R 2 R 1 + R 2 In series circuits the current persists through every resistor while voltage arbitrarily decreases. On the other hand, in parallel circuits the current relentlessly decreases while the current differs. Voltage can be obtained by applying Ohm’s law where Voltage is directly proportional to Resistance, and Current is inversely proportional to Resistance: V = IR R = V / I I = V / R
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