JEE Main 2026 — Current Electricity Question with Solution
JEE Main 2026 (22 January Shift 1)
Question
A meter bridge with two resistances and as shown in figure was balanced (null point) at 40 cm from the point . The null point changed to 50 cm from the point , when resistance is connected in parallel to . The values of resistances and are .
Choose an option
Show full solutionCorrect option: D
Correct answer
D
Step-by-step explanation
Initial balance at 40 cm: ...(i)
With parallel to , null point at 50 cm:
...(ii)
From (i): .
Substituting in (ii): .
.
.
With parallel to , null point at 50 cm:
...(ii)
From (i): .
Substituting in (ii): .
.
.
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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.