The \( \mathrm{n} \) rows each containing \( \mathrm{m} \) cells in series are joined in paralle...

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The \( \mathrm{n} \) rows each containing \( \mathrm{m} \) cells in series are joined in parallel. Maximum current is taken from this combination across and external resistance of \( 3 \mathrm{ohm} \) resistance. If the total number of cells used are 24 and internal resistance of each cells is \( 0.5 \mathrm{ohm} \) then
a. \( \mathrm{m}=8, \mathrm{n}=3 \)
b. \( \mathrm{m}=6, \mathrm{n}=4 \)
c. \( \mathrm{m}=12, \mathrm{n}=2 \)
d. \( m=2, n=12 \)
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