main menu MyCT
Main
Forum
Two resistors in parellel

     Engineering index
Electronics index
Two resistors in parellel diagram
calc
When two (or more) resistances are in parellel, then the resitence provided by the two together is given by reciprocal addition, i.e. 1/(total resistence) = (1/resistance1) + (1/resistance2).
Resistance a
Resistance b

Equivalent to
Add login to add

notes
The addition of reciprocals is a common solution for problems, aand this calc may be used to solve other similar relationships.
For larger numbers of resistors, this calc may be used iteratively.