JEE Main 2004 — Thermal Properties of Matter Question with Solution
JEE Main 2004
Question
The thermistors are usually made of
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Show full solutionCorrect option: C
Correct answer
Cmetal oxides with high temperature coefficient of resistivity "
Step-by-step explanation
These are devices whose resistance varies quite markedly with temperature mean having high-temperature coefficient of resistivity. [Their name are derived from thermal resistors]. Depending on their composition they can have either negative temperature coefficient or positive temperature coefficient or positive temperature coefficient or positive temperature coefficient characteristics.
The negative temperature coefficient type consists of a mixture of oxides of iron, nickel, and cobalt with small amounts of other substances. The positive temperature coefficient types are based on barium titanate.
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This is a previous-year question from JEE Main 2004, covering the Thermal Properties of Matter chapter of Physics. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.