JEE Main 2026 — Current Electricity Question with Solution
JEE Main 2026 (21 January Shift 1)
Question
The heat generated in 1 minute between points and in the given circuit, when a battery of 9 V with internal resistance of is connected across these points is J.
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Show full solutionCorrect answer: 1080
Correct answer
1080
Step-by-step explanation
Wheatstone bridge with P = 1Ω, Q = 2Ω, R = 2Ω, S = 4Ω
→ Bridge is balanced, no current through middle 1Ω.
: Upper (3Ω) and Lower (6Ω) in parallel =
Total resistance = 1 + 2 = 3Ω
Current A
Power between A and B: W
Heat in 1 min = J
→ Bridge is balanced, no current through middle 1Ω.
: Upper (3Ω) and Lower (6Ω) in parallel =
Total resistance = 1 + 2 = 3Ω
Current A
Power between A and B: W
Heat in 1 min = J
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This is a previous-year question from JEE Main 2026, 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.