Questions
n cells of emfs E1, E2…………, En, and internal resistance r1, r2 ……………… rn are in series to form closed circuit with zero external resistance. For each cell ratio of emf to internal resistance is K then current in circuit is:
detailed solution
Correct option is B
i=ε1+ε2+…+εnr1+r2+…+rnEr=Ki=r1 K+r2 K+…+rnKr1+r2+…+rn=KE = rKTalk to our academic expert!
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