Questions
A cell dissipates the same power across each of two resistors and when connected separately. The internal resistance of cell is
detailed solution
Correct option is D
eR1+r2R1=eR2+r2R2R1R22+r2+2R2r=R2R12+r2+2R1rR1R22+R1r2+2R1R2r=R2R12+R2r2+2R1R2rR1-R2r2=R1R2R1-R2r=R1R2Talk to our academic expert!
Similar Questions
A resistor R is connected across a battery of emf 12 V. It observed that terminal potential differenceis 9 V and the power delivered to resistor is 18 W. Internal resistance of the battery ‘r’ and the resistance R are respectively
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