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The n rows, each containing m cells in s...

The n rows, each containing m cells in series are joined in parallel. From this combination across an external resistance of `6Omega`, maximum current is taken. Let the total number of cells used be 6 and internal resistance of each cell be `1Omega`, then the value of `m+n` is,

Text Solution

Verified by Experts

The correct Answer is:
`07.00`
Total no: of cells `= m xx n = 6` ... (i)
For maximum current in the circuit, `R=(mr)/(n)`
`:. 6 = (m)/(n) xx (1) rArr m = 6n` ....(ii)
On solving equations (i) and (ii),
m = 6, n=1
`:.m+n =6+1=7`
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Knowledge Check

  • 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 then

    A
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    B
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    D
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  • The n rows each containing m cells in series are joined in parallel. Maximum current is taken from this combination across and external resistance of 3ohm resistance. If the total number of cells used are 24 and internal resistance of each cells is 0.5 ohm then

    A
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    B
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