VITEEE 2015 Paper

Section: Physics

Question : 18 of 120

Marks: +1, -0

Two sources of equal emf are connected to a resistance R. The internal resistance of these sources are r1 and r2 (r1 > r2). If the potential difference across the source having internal resistance r2 is zero, then

R =
r1r2
r2−r1
R = r2(
r1+r2
r2−r1
)
R = (
r1r2
r2−r1
)
R = r2−r1

Validate

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