7.) Place the cursor over the battery and left click once. You will see a voltage adjuster for the battery at the bottom of the screen. Adjust the voltage to 2.0 V, and again record the voltage and current in the table 1 below. Voltage | Current Resistance | Current (V) (A) (Ohms) (A) Table 1 Table 2 8.) Continue in this manner until the voltage reaches 10 V. Record the voltage and the current in table 1 above for each trial. 9.) Leave the battery voltage at 10 V. Place the cursor over the resistor and left click on it. Adjust the resistance value to 2 Ohms. Record the resistance and the currentin table 2 above. 10.) Adjust the resistance to 4 Ohms, and again record the resistance and the current in table 2 above. Continue in this manner until the resistance reaches a value of 20 Ohms. Analysis: Type up your answers to these questions. Your lab report will consist of these answers, plus the two graphs that are requested below. 11.) What seems to be the relationship between the voltage applied to a circuit and the current through that circuit? What are you assuming does not change while investigating this relationship? PHY 2054C- College Physics I1 Virtual Lab 4: Basic Circuits and Ohm's Law Objective: This short experiment will investigate the relationships that govern simple series circuits. You will be varying both the voltage applied to a circuit, and the resistance of that circuit, to see how the current in that circuit is affected. Part 1: 1) Click on the link Circuit Construction Kit: AC - Virtual Lab - RLC Circuit | AC Circuits Kirchoff's Law - PhET Interactive Simulations (colorado.edu) and open the simulation. 2.) The circuit simulation allows you to build simple DC (direct current) circuits that will look = O ; phet.colorado.edu t t t nstru S M T @ R s (W Show Current { Electrons @ - O Conventional [ Labels s O values a O Stopwatch P () = AL Voltage . |.-||'|Ir..|r. o o A - Resstor Capacior nducioe b 3 Circuit Construction Kit: AC - Virtual Lab Q@ phEr . very similar to what the circuit would look like if you were building it in the lab. When you first open the simulation, you will see a screen that looks like the picture above. The elements that can be used to build a circuit can be seen along the left side of the screen. The values of the resistance and the voltage of the battery can be adjusted clicking on the battery or resistor and changing their values at the bottom of the screen. The blue window is a work area where the circuits will be constructed. 6.) Move a resistor to the blue workspace by placing the cursor over the resistor, holding down the left mouse button, and dragging the element onto the work area. Adjust its resistance to 20 Ohmes. Move a battery to the blue workspace by placing the cursor over the resistor, holding down the left mouse button, and dragging the element onto the work area. Adjust its voltage to 1V. Drag wires, an ammeter (the device that will measure current-this can be found on the right-hand side of the screen), and a switch onto the work area, connecting them in series. To connect elements, place the circles at either end of adjacent elements on top of each other. Your constructed circuit should look similar to the example below. Note that when the switch is open, the circuit is not complete and the current is 0 Amps. & C tt phet.colorado.edu G m = & o W Show Current @ Electrons @ Wire O Conventional # [ Labels - O values Battary - O stopwatch & AC Voltage /a\\ 7 G : =n . Lol == - = Light Bul - = - ; JL1 L3 - VoRage Chart [ Resistor | o B Advanced Wira Resistivity it Ty lots. = Source Resistance g tiny 100 S \"1.1,11111. ~ - 4 2oy . I alla Tap circuit element to edit. i ) e Circuit Construction Kit: AC - Virtual Lab