when two resistors are connected in series, their effective resistance is 80 ohms. When they are connected in parallel, their effective resistance is 20 ohms. What are the values of two resistances?
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suppose they are a & b..
a+b=80
an/a+b=20
ab= 1600
a(80-a)= 1600
when we Sovle it ..
found ,a=b=40
a+b=80
an/a+b=20
ab= 1600
a(80-a)= 1600
when we Sovle it ..
found ,a=b=40
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