JEE Main 2003 — Current Electricity Question with Solution
JEE Main 2003
Question
The thermo e.m.f. of a thermo-couple is at room temperature. A galvanometer of 40 ohm resistance, capable of detecting current as low as , is connected with the thermo couple. The smallest temperature difference that can be detected by this sytem is
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Show full solutionCorrect option: A
Correct answer
A
Step-by-step explanation
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This is a previous-year question from JEE Main 2003, covering the Current Electricity 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.