Amateur Electronics question

[Michael Buchstaller]

>Rtotal=1/R1 * 1/R2

This Formula is correct.

>Assuming this is the correct formula, shouldn't two resistors with a value
>of 1 each equal a total resistance of 1? The answer the book gave was .5,
>where am I missing the logic?

When you are wiring two or more resistors in parallel, the resulting resistance
must always be smaller than the smallest single resistor.
When you take 2 resistors of 1 Ohm each, the current passing through them
could be twice the current which would occur in a single resistor, hence the
total resistance is only the half of them.


-Michael Buchstaller