In an electric circuit, two resistors with resistances G and H are connected in parallel. In this case, if I is the combined resistance of these two resistors, then the reciprocal of I is equal to the sum of the reciprocals of G and H. What is I in terms of G and H?	Choose the correct answer.
A) (GH)  B) (G+H)  C) GH/(G + H)  D) (G-H)  E) NONE OF THESE
The wording is a bit confusing, though basically we are told that 1/I= 1/G + 1/H, from which it follows that I=GH/(G + H).   Answer: GH/(G + H)
<result>C</result>
In an electric circuit, two resistors with resistances G and H are connected in parallel. In this case, if I is the combined resistance of these two resistors, then the reciprocal of I is equal to the sum of the reciprocals of G and H. What is I in terms of G and H?