JEE Mains 27-July-2022 Shift 1 Solved Paper

Section: Physics

Question : 41 of 90

Marks: +1, -0

Two sources of equal emfs are connected in series. This combination is connected to an external resistance R. The internal resistances of the two sources are r1 and r2(r1>r2). If the potential difference across the source of internal resistance r1 is zero, then the value of R will be :

[27-Jul-2022-Shift-1]

r1−r2
‌
r1r2
r1+r2
‌
r1+r2
2
r2−r1

Validate

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