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Two cells of emf 1v, 2v and internal resistance 2volt per meter respectively connected serious and parallel. What should be the external resistance be the same

Two cells of emf 1v, 2v and internal resistance 2volt per meter respectively connected serious and parallel.  What should be the external resistance be the same
 

Grade:12th pass

2 Answers

Saurabh Koranglekar
askIITians Faculty 10341 Points
one year ago
Dear student

Please repost the question with understandable english so that it could be solved
Or please upload the source or image of question

Regards
Khimraj
3007 Points
one year ago
In series effective emf =2+1=3V
effective internal resistance =2+1=3ohm 
total resistance =3+R ohm 
where R=external resistance
current through the circuit=current through the external resistance =3/3+R ampere 
in parallel effective emf =2V
effective resistance =2/3ohm 
total resistance =2/3+R. ohm
current through the external resistance
=2/(2/3+R) Ampere
in two cases current is same 
then solving two equation we get R=4ohm
as in series connection resistance is more so heat will generate more in series connection 
hope this will help you 

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