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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

Saurabh Koranglekar
one year ago
Dear student

Please repost the question with understandable english so that it could be solved

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