Basic Electricity

Thread Starter

55bulldog

Joined Dec 26, 2008
3
What is the total resistance in a circuit having 3 feet of 10-ohm/ft wire, with two 15-ohm resistors wired in parallel? I used the formula; Rtotal=R1XR2/R1+R2 & got 7.5ohms. 7.5ohms is not one of the choices for an answer. I went back over the text & did not find anything to help find another answer. I am not sure how nor if the wire length & resistance should figure into the problem solving.
 
Last edited:

beenthere

Joined Apr 20, 2004
15,808
Don't forget that there is a series resistance in circuit - something about that wire having several ohms/foot.
 

Thread Starter

55bulldog

Joined Dec 26, 2008
3
Thanks for the help. I will try to change my posting so that the time stamp will show.
 
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