Current Electricity Part 1

Section: Physics

Question : 79 of 100

Marks: +1, -0

Two sources of equal emf are connected to an external resistance R. The internal resistance of the two sources are R1 and R2(R1>R1). If the potential difference across the source having internal resistance R2 is zero, then

[AIEEE 2005]

R=R2−R1
R=R2×(R1+R2)/(R2−R1)
R=R1R2/(R2−R1)
R=R1R2/(R1−R2)

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