Three unequal resistors in parallel are equivalent to a resistance 1 . If two of them are in the ratio 1:2 and if no resistance value is fractional, the largest of the three resistance in ohm is
Three unequal resistors in parallel are equivalent to a resistance 1 . If two of them are in the ratio 1:2 and if no resistance value is fractional, the largest of the three resistance in ohm is
Let the resistances be and
In parallel
If k=1, then is found to be negative, which is impossible.
If k=2, then
, not satisfying the condition of the question that all resistance are unequal.
∴ Largest resistance =6