EVSU LAB#8 PHYS 1112/PHYS 2212 SERIES AND PARALLEL CIRCUITS BASICS PLEASE DO NOT FORGET TO WRITE YOUR INTRODUCTION AND CONCLUSION SECTIONS Directions: 1. Log on to your campuiter 2. Goto the following website: https://phet.colorado.edu/sims/html/circuit-construction-kit-dc/latest/circuit-construction-kit- dc en.html You now have the raw material fo create a circuit. Take a moment to look over the site and find all the different materials. To build a circuit you will need several wires, a light bulb, a voltage source, a volimeter, and a non contact ammeter. Play with it to see how to grab and manipulate these tools. Click the reset button. A. Series Circuits Build a simple series circuit that consists of 8 pieces of wire, 2 light bulb, and 1 battery (voltage source). To complete the circuit, the red circles at the end of each must overlap. Please note that the light bulbs also have TWO circles. Your circuit is complete and working when the light comes on and the blue dots begin moving. Paste a screen shot of your series circuit here. What do you think that the moving blue dots represent? Use the tools at the side to get a voltmeter and a Nan-cantact ammeter. Put the voltmeter near the battery and place the red tab at one end and the black at the other. What is the voltage? Place the ammeter crosshairs over the moving blue dots. What is the reading? What does this tell us about the circuit? Now change the resistance of the light bulbs and voltage of the battery. Make observations on how this changes the readings on the voltmeter and ammeter. Record your observations below. Be sure to record the changes you made and then the effects. Battery Voltage AV AV, AV, Total Current (1) Comment on your values obtained in the table above!! Click the reset button to begin working on a parallel circuit. B. Parallel Circuits Parallel circuits provide more than one path for electrons to move. Create, using the simulator tool, a parallel circuit that includes 10 wires, 2 light bulbs and 1 voltage source. Paste a screen shot of your parallel circuit here. The blue dots will be moving and both lights will be on once the circuit is complete. Use the voltmeter and non-contact ammeter to measure electron flow and push. Voltage Ammeter How does this compare with your observations in the series circuit? Is this surprising? WHY or WHY NOT? Change the bulb resistance and battery voltage and record your observations below. Battery Voltage AV R1 R2 Total I Now right click on one of the wires connected to a light bulb. Remove the wire and record your observations. Does this affect the voltage, amperes, or visually change the appearance of the light bulb?Replace the wire. Now remove one of the wires touching the voltage source. What happened? What is the difference between removing the first wire and the second? Why is this significant? C. Comparisons Create a second series circuit and record your observations about the two once they are side by side. You may use the tool to play around. Create a circuit using a switch. Record any observations below. PLEASE DO NOT FORGET TO WRITE YOUR INTRODUCTION AND CONCLUSION SECTIONS