Ohm's+Law+-+Nathan+Devan,+Peyton+sumthin,+Jonathan+Hannings

Ohm's Law Inquiry Lab
 * Title of Lab:**

Nathan Devan, Peyton Coleman, Jonathan Hannings
 * Researchers:**

What is the relationship between the voltage across an Ohmic device and the current flowing through the device?
 * Research Question:**


 * Research:**

Current is measured in amps. 1 Amp= 1 Coulomb/Second Voltage is measured in volts. 1 Volt= 1 Joule/Coulomb Using Ohm's law seems like cheating since it already tells us that voltage and current are directly proportional based on V = IR so we'll assume that it hasn't been made yet.

High voltage tends to accompany high current, and vice versa. So when one increases, it's possible the other increases as well such that they are directly proportional.

The current is directly proportional to the voltage, as in the equation from a wild guess that V = IR
 * Hypothesis:**

Voltage source Voltmeter Ammeter Wires with connectors on the ends Simple Resistor Electric energy
 * Materials:**

1--Insert resistor into ammeter screw and screw it into place. 2--Connect voltage to ammeter and resistor end. 3--Turn voltage source on and select unique values with the voltage dial between 0 and 0.2 amps shown by the ammeter. 4--Measure and record the voltage at each value by touching the volt meter prongs to both sides of the resistor. 5--Record colors: We think Brown-Black-Black-Red
 * Procedure:**


 * Data:**


 * **Current (Amps)** || **Voltage (Volts)** ||
 * 0 || 0 ||
 * .02 || .135 ||
 * .04 || .403 ||
 * .06 || .605 ||
 * .08 || .840 ||
 * .10 || .99 0 ||
 * .12 || 1.224 ||
 * .14 || 1.430 ||
 * .16 || 1.580 ||
 * .18 || 1.820 ||
 * .20 || 2.03 ||


 * Data Analysis:**

Voltage is in Volts, Current is in Amps


 * R^2** = 0.998478
 * slope** = 10.2073
 * y-intercept** = -0.015455

The y-intercept represents that there is no voltage without current. The slope is the factor of resistance is affecting the voltage measured after the resistor. The theoretical resistance based on the measured values is averagely 10.21, which is the slope of the graph. I could infer that the colors of the bands on the resistor were something like (brown/black)-(?)-(brown/black)-(tolerance).

Our hypothesis was supported by the nearly linear data. The percent error that we probably had could have been caused by imprecise instruments, resistance in the wire and that the wire connections had low cross-sectional surface area in between, or an inaccurate resistor.
 * Conclusion:**