Temperature and Electricity
does temperature effect electrical current?
Yes, temperature does effect the conductivity of materials. For
conductors, an increase in temperature reduces the current carrying
capacity. For insulators, it has just the opposite effect; an increase in
temperature increases the current carrying capacity.
---Nathan A. Unterman---
Short answer - Yes...
Long answer - ...but I don't know to what extent.
At least now you'll know that you're not chasing a wild goose when you do
Temperature can affect the conductivity of materials. This will affect the
current that flows through it if the voltage is set.
The conductivities of most metals decrease as the temperature increases.
Semiconductors behave exactly the opposite way; their condictivities
increase as the temperature increases. The reasons for these behaviors is
faitly complicated; ask again if you want a more thorough explanation.
Richard E. Barrans Jr., Ph. D.
Yes it does. If you heat up a wire carrying electricity, you change its
resistively, and thus the current through for a fixed applied voltage.
Dr. Ali Khounsary
Advanced Photon Source
Argonne National Laboratory
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Update: June 2012