An increase in operating temperature in most electrical devices carrying current results in
- a decrease in resistance and an increase in current.
- no effect on the resistance and current.
- an increase in resistance and a decrease in current.
Explanation from PART66Online
Most current-carrying electrical devices use metallic conductors with a positive temperature coefficient, so a rise in operating temperature increases their resistance. For a fixed applied voltage, higher resistance means, by Ohm's law, a lower current.
S
santro asked · 24 Feb 2016
isnt R inversly proprtion to Temp? Help
Community Comments (1)
P
PART66Online
29 Feb 2016
Most conductors have a positive temperature coefficient. The exceptions are semiconductors.
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