Teaching HTET PGT Level 3 - 2024 Mock Test Physics Current, Resistance and Electricity Cells in Series and in Parallel
Two cells of same emf but different internal resistances r1 and r2 are connected in series with a resistance R. The value of resistance R, for which the potential difference across second cell is zero, is:
1
r2 – r1
2
r1 – r2
3
r1
4
r2