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Download AP 1: Ohm`s Law Lab (Studet) v1.0 20140810
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Ohm’s Law Lab PSI Physics AP 1 – Electric Current All answers and data must follow the PSI Lab Report Format. Objective Construct the circuit shown below. For several settings of the potentiometer, measure the current and the voltage. Use your collected data to verify the relationship between current and voltage (Ohm’s Law). Materials ● ● ● ● ● ● Spool of wire (resistor of unknown resistance) Knife switch Potentiometer (a three-terminal resistor with a sliding or rotating contact used to control voltage in a circuit) Connecting wire terminated with alligator clips Voltage supply (9V battery, or D or AA cells in a holder to provide 3V or 6V) Ammeter and Voltmeter -or- 2 Multimeters (one run as ammeter and the other as voltmeter) ○ Remember: voltmeters are connected in parallel with the section of circuit (resistor) being tested and ammeters are connected in series in the branch of the circuit being tested. A complete lab report must include: ❏ ❏ ❏ ❏ ❏ The materials you used, and how you assembled them Data (V and I ) collected in tabular form A graph of V vs I The obtained value of the resistance of the wire spool A conclusion discussing: ❏ summarizing your results ❏ analysing any discrepancies between Ohm’s Law and your measurements ❏ proposing improvements to the experiment and / or further experiments you might like to perform © njctl.org AP Physics 1 Electric Current