1.

A set of n identical resistors,each of resistance R ohm when connected in series, have effective resistance X ohm and when connected in parallel the effective resistance is y Ohm. The relation between R,X and Y is given by

Answer»

`R=sqrt(XY)`
`R=YsqrtX`
`R=XsqrtY`
`sqrtR=XY`

SOLUTION :EQUIVALENT resistance of n resistores
When connected in series , `Y=R/n`
So, `XY=nRtimesR/n=R^2`
`thereforeR=sqrt(XY)`


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