General Physics Lab: Electrical Resistance & Ohm's Law

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Equipment and setup

  • Equipments used in this experiment are (see Figure 1): Resistor board, power supply, digital multimeter, ammeter, several test leads.
  • When using the digital multimeter to measure the resistance or voltage , connect the V/Ohm and Com to the connectors on the resistors (see Figure 3).
  • Set the multimeter (or voltmeter) on the 20 DCV range to measure the voltage (see Figure 3).
  • Figure 4 shows an example of the connected circuit.
[Click on images to enlarge.]
1 2
3 4

TA Notes
  • Perform the experiment ahead of time!
  • Make sure the students have let you check the circuit before they turn on the power supply.
  • Remind the students that in part II, don't let the voltage exceed 15 volts and in part III, don't let the current exceed 30mA.
  • Before turning on the power supply, set its output to zero and increase it gradually after applying power.

Data, Results and Graphs

Enter TA password to view sample data and results of this experiment:

Lab Manual

The Lab Manual for this experiment does not exist on-line.

CUPOL Experiments

Take a look at these CUPOL experiments for an on-line laboratory experience:

If you have a question or comment, send an e-mail to Lab Coordiantor: Jerry Hester

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Last Modified on 01/27/2006 14:25:18