First slide

Temperature dependence

Question

Statement 1: In practical application, power rating of resistance is not important.
Statement 2: Property of resistance remains same even at high temperature.

Easy

A

Both statements 1 and 2 are correct
B

Statement 1 is correct statement 2 is incorrect
C

Statement 1 is incorrect statement 2 is correct
D

Both statements 1 and 2 are incorrect

Solution

Because of heat production, every resistance has a maximum power rating, the maximum power that can be dissipated without overheating the device. When this rating is exceeded, heat is produced due to which resistance may change unpredictably.

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