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K5-44: NON-OHMIC DEVICE - LIGHT BULB
- zzfixk21
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12 years 3 days ago - 11 years 11 months ago #520
by zzfixk21
ID Code: K5-44
Purpose: Show the change in resistance of a light bulb with temperature.
Description: A 60 watt light bulb is connected to a switch so that it can be quickly disconnected from the 110 VAC power to an ohmmeter. The resistance of the 60 watt bulb in operation at a high temperature is R = V^2/P = 110^2/60 = 200 ohms. The resistance cold is about 18 ohms. Turn the bulb on, then switch it to the ohmmeter. The resistance starts high and drops quickly as the bulb cools.
Availability: Available
K5-44: NON-OHMIC DEVICE - LIGHT BULB was created by zzfixk21
ID Code: K5-44
Purpose: Show the change in resistance of a light bulb with temperature.
Description: A 60 watt light bulb is connected to a switch so that it can be quickly disconnected from the 110 VAC power to an ohmmeter. The resistance of the 60 watt bulb in operation at a high temperature is R = V^2/P = 110^2/60 = 200 ohms. The resistance cold is about 18 ohms. Turn the bulb on, then switch it to the ohmmeter. The resistance starts high and drops quickly as the bulb cools.
Availability: Available
Last edit: 11 years 11 months ago by zzfixk21.
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