Amateur Electronics question

[Scott Gravenhorst]

No, this formula is not correct.  For two 1 ohm resistors
in parallel which should be 0.5 ohm, this formula yields 
1 ohm.

buchi at takeonetech.de wrote:
>>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
>

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