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Question
How many times will the resistance of an identical conductor be increase, if the parallel resistance be change to series one?
Options
`sqrt(n)`
`n`
`n^2`
`n - 2`
MCQ
Solution
`n^2`
Explanation:
In series combination, effective resistance.
Rs = R + R ................ + n term = `n/R`
In parallel combination, effective resistance
`1/(Rp) = 1/R + 1/R` + .............. n term = `n/R`
RP = `R/n`
`(Rs)/(Rp)= (nR)/(R/n) = n^2`
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