Questions
'Two sources of equal e.m.f, are connected to an external resistance .R. The internal resistances of the two sources are R1, and R2 (R2 >R1) If the potential difference across the source having internal resistance .R2, is zero, then
detailed solution
Correct option is A
The current flowing through the circuit is given byi=2ER+R1+R2Potential difference across the source of internal resistance R2 is given byGIVEN v2=E-iR2=0E=2ER2R+R1+R2or R+R1+R2=2R2 or R=R2−R1Talk to our academic expert!
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