Ryans+Resistive+Circut+Labs

=Resistive Circuit= February 3, 2010


 * Participants**: Ryan Payne
 * Purpose**: The purpose of this lab is to study the behavior of current in relation to volts in different circuits.
 * Lab Documents**: Include a link to any documentation provided for the lab or any references used in writing the lab report.


 * Brief Description of Experiment**: For this lab we observed the behavior of current (amps) and voltage (volts) in different kinds of circuits. We constructed a couple simple circuits and simulated another couple. We observed how current and volts behave in series circuits and parallel circuits. This was done using ammeters and voltmeters, which are tools used to measure amps and volts. The graphs shown below were created on logger pro, and the simulations done were simulated on the phet.colorado.edu website.
 * [[image:Parallel_-_Set-Up.gif width="176" height="280"]][[image:Series_-_Set-Up.gif width="220" height="234"]][[image:2_3_1_3_eng.png width="201" height="182"]]

Data**: The first graph shown is from Activity 1, when we created a simple circuit with one Ohmic resistor connected to a power supply and an ammeter.

This second graph is from the data of the Non-Ohmic device (light bulb) connected to a power supply and an ammeter.


 * [[image:activity_2.JPG width="811" height="350"]]

The tables shown below correspond to the graphs shown above.

I do not have the actual simulations for this lab because i remember i saved them but could never re-open them. Therefor could not re-do all of them.



Calculations:** Current = Voltage / Resitance I = V / R If the equation is rearranged, the resistance can be found by dividing the voltage, in Volts, by the current, in Amps. Resistance = Voltage / Current R = V / I slope = 1 / Resistance m = 1 / R ||
 * //Caculations// || The current in amps is calculated by dividing the voltage, in Volts, by the resistance, in Ohms.
 * the slope of the line on the current vs voltage graph is equal to 1/resistance


 * Conclusion**: During this lab I learned how to create an electrical circuit using simulations. I learned about ohms law and the relationship between Current ( I ) and Voltage ( V ) and resistance ( R ) whereas Current is equal to the voltage divided by the resistance of the circuit: (I = V/R). Current is the flow of electron molecules in a circuit. Resistance is simply how the current is resisted. Voltage is the charge of the electron molecules in the circuit.