Questions
A cell sends a current through a resistance R1, for one second and then sends current through another resistance R2 for one second. Same heat is produced in both the resistances. The internal resistance of the cell is
detailed solution
Correct option is C
i1=ER1+r and i2=ER2+rAlso i12R1=i22R2∴ E2R1R1+r2=E2R2R2+r2Solving, we get r =R1R2Talk to our academic expert!
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