JEE Main 2012 — Current Electricity Question with Solution
JEE Main 2012 (12 May Online)
Question
Three resistors of and are connected in parallel and the combination is connected in series with a battery of internal resistance. The rate of Joule heating in the resistor is
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Show full solutionCorrect option: C
Correct answer
C
Step-by-step explanation
Resistors and are connected in parallel, its equivalent resistance is given by
Again is connected to battery whose internal resistance .
Equivalent resistance now,
Current,
Current through resistor
Therefore, rate of Joule heating in the resistor
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This is a previous-year question from JEE Main 2012, 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.