Two resistors, one 12Ohms and the other 18 Ohms, are connected in parallel. What is the equivalent resistance of the parallel combination?
2 answers
i know when its paralle 1/Req= 1/R1 + 1/R2...
That is correct.
the other way to think about it is to add conductance
Conductance = 1/resistance
1/12 + 1/18 = 3/36 + 2/36 = 5/36
so resistance = 36/5 Ohms
the other way to think about it is to add conductance
Conductance = 1/resistance
1/12 + 1/18 = 3/36 + 2/36 = 5/36
so resistance = 36/5 Ohms