Play-Doh Roh

TESTING INVESTIGATION: Is Play-Doh an ohmic material?

Equipment: voltmeter, ammeter, power supply, vernier caliper, probes, wires and alligator clips

Keeping the voltage under 2.0 volts:

1. Determine if Play-Doh obeys Ohm's Law.

2. Investigate the effects of length and diameter on your measurements.

3. Calculate a value for the resistivity (Rho) of your color of Play-Doh.