Five cells each of e.m.f. E and internal resistance r are connected in series. If due to…
Physics · JEE Main · NTA Exams — Current Electricity
Five cells each of e.m.f. E and internal resistance r are connected in series. If due to oversight one cell gets connected wrongly ,then the equivalent e.m.f. and internal resistance of this combination is
- 5E,5r
- 4E,4r
- 3E,4r
- 3E,5r
Answer
(D) 3E,5r
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