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Help me to solve 23.7!! Find the unknown current i internal resistance r and the emf E ...in the diagram

Help me to solve 23.7!! Find the unknown current i internal resistance r and the emf E ...in the diagram

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Susmita
425 Points
5 years ago
Look the current i breaks into two part 1A and 2A.
So i=3A.
Now take the lower loop.
E=(1×1)+(2×3)=1+6=7 volt
Now take the entire outer loop.
12=ir+(2×3)
Or,12=3r+6
Or,3r=6
Or,r=2
Hope this helps.

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