The `n` rows each containinig `m` cells in series are joined parallel. Maximum current is taken from this combination across jan external resistance of `3 Omega` resistance. If the total number of cells used are 24 and internal resistance of each cell is `0.5 Omega` thenA. `m = 8, n = 3`B. `m = 6, n = 4`C. `m = 12, n = 2`D. `m = 2, n = 12`

The `n` rows each containinig `m` cells in series are joined parallel.

1.	The `n` rows each containinig `m` cells in series are joined parallel. Maximum current is taken from this combination across jan external resistance of `3 Omega` resistance. If the total number of cells used are 24 and internal resistance of each cell is `0.5 Omega` thenA. `m = 8, n = 3`B. `m = 6, n = 4`C. `m = 12, n = 2`D. `m = 2, n = 12`
Answer» Correct Answer - C `n` : number of rows `m` : total no. of cells in a row . `R = 3 Omega, r = 0.5 Omega` `mn = 24`…(i) From maximum current in `R` `R = (mr)/(n) rArr 3 = (m)/(n) xx 0.5` …(ii) `m = 6 n` `mn = 24 rArr 6n^2 = 24 rArr n = 2, m = 12`.

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