Fri June 15, 2012 By: Kiran Kumar

What is the minimum resistance which can be made using 5resistors each of 1/5 ohm?

Expert Reply
Fri June 15, 2012
In a parallel connection the total resistance is always less than the minimum amount of resistance in the parallel circuit. It is so because:
consider a netowrk of tro resistances a and b connected in parallel.
Let b<a.
Their equivalent resistance will be
Thus clearly minimum resistance is obtained on parallel connections.
thus minimum resistance that can be made is by parallel connections between the five resistances, i.e. 1/25 ohm
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