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Heating and Chemical Effect of Current — JEE physics STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 ScienceJEE physicsHeating and Chemical Effect of Current1 Mark
Question
Assertion : In practical application, power rating of resistance is not important.
Reason : Property of resistance remain same even at high temperature.
✓

Answer

(d) 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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