Contents
Cal Poly Pomona
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Physics Demonstrations at Cal Poly Pomona

Demo Index:
    EM-F-OD
Pira Index:
    5F 10.10
Title:
    OHM'S LAW (DC)
Description:
    Demonstrates Ohm’s Law using various R values.
Equipment:
    1. HBS power supply
    2. Demo multi-meter
    3. 3 ohmite high-wattage resistors:brown ceramic (2&2 connected, 8 single)
    4. 4 leads
    2 B-B
    2 B-A
Procedure:
    1. Set up equipment as shown.
    2. For several different settings on the power supply, measure the voltage (on the DMM) and the current (on the power supply.)
    3. Using V = IR see if the R calculated from the measurements agree with the given value on each resistor.

    (A 2-ohm resistor can be measured or the two 2-ohms measured in series for the 4 ohm)