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K5-34. Thermal Coefficient Of Resistance In Copper
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HomeK. Electromagnetic PrinciplesK5. Electrical Properties Of MatterK5-34. Thermal Coefficient Of Resistance In Copper
K5-34. Thermal Coefficient Of Resistance In Copper
Purpose
To show that the resistance of copper changes linearly with temperature.
Equipment
Mounted copper coil, liquid nitrogen, dry ice and methanol, digital ohmmeter, video camera with monitor, and blank overhead transparency graph with overhead projector. ◙
Setup Time
15 minutes.
Images
Description
Measure the resistance of the copper coil at room temperature (295K), at the temperature of a dry ice and methanol mixture (195K), and at the temperature of liquid nitrogen (77K). Plot resistance versus temperature to demonstrate the linearity.
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See pagesk1. forces on moving charges
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See pagesk2. electromagnetic induction
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See pagesk3. transformers
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See pagesk4. motors & generators
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See pagesk5. electrical properties of matter
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See pagesk6. electric circuits & instruments
-
See pagesk7. rlc circuits
-
See pagesk8. electromagnetic waves
-
See pagesk1. forces on moving charges
-
See pagesk2. electromagnetic induction
-
See pagesk3. transformers
-
See pagesk4. motors & generators
-
See pagesk5. electrical properties of matter
-
See pagesk6. electric circuits & instruments
-
See pagesk7. rlc circuits
-
See pagesk8. electromagnetic waves
Physics Lab Demos