Reference; AC/DC ELECTRONICS LABORATORY MANUAL

Experiment 4: Resistances in Circuits EQUIPMENT NEEDED: - AC/DC Electronics Lab Board: Resistors - Multimeter Purpose The purpose of this lab is to begin experimenting with the variables that contribute to the opera- tion of an electrical circuit. This is the first of a three connected labs. Procedure Choose three resistors of the same value. Enter those sets of colors in Table 4. I below. We will refer to one as #1, another as #2 and the third as #3. Determine the coded value of your resistors. Enter the value in the column labeled "Coded Resistance" in Table 4.1. Enter the Tolerance value as indicated by the color of the fourth band under "Tolerance." Use the Multimeter to measure the resistance of each of your three resistors. Enter these values in Table 4.1. 4Determine the percentage experimental error of each resistance value and enter it in the appropri- ate column. Experimental Error = [(Measured - Coded)) / Coded ] x 100%. Table 4.1 Colors Coded Measured % 1st 2nd 3rd 4th Resistance Resistance Error Tolerance #1 #2 #3 5 Now connect the three resistors into the SERIES CIRCUIT, figure 4.1, using the spring clips on the Circuits Experiment Board to hold the leads of the resistors together without bending them. Measure the resistances of the combinations as indicated on the diagram by connecting the leads of the Multimeter between the points at the ends of the arrows. PASCO 11 AC/DC Electronics Laboratory 012-05892C Series R , 2 R,23 Figure 4.1 Construct a PARALLEL CIRCUIT, first using combinations of two of the resistors, and then using all three. Measure and record your values for these circuits. Parallel NOTE: Include also R,, by replacing R, with R. Connect the COMBINATION CIRCUIT below and measure the various combinations of R resistance. Do these follow the rules as you discovered them before? Combination Figure 4.2 R. R R. . R