1.

Three resistances each of 1 ohm, are joined in parallel.Three such combinations are put in series, then the resultantresistance will be45[MP PMT 2012)

Answer»

In parallel the resulting resistance is1/R=1/1+1/1+1/11/R=3R=1/3ohmhencein series =1/3+1/3+1/3=3/3=1ohm



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