INFINITE PROBLEM!
Electricity and Magnetism
Level
2
FIND THE EQUIVALENT RESISTANCE BETWEEN POINTS A AND B
R
R/2
R/4
This section requires Javascript.
You are seeing this because something didn't load right. We suggest you, (a) try
refreshing the page, (b) enabling javascript if it is disabled on your browser and,
finally, (c)
loading the
non-javascript version of this page
. We're sorry about the hassle.
1 solution
I've solved this question using symmetry.Firstly, suppose V is the P.D across A and B then, we can say that: V=IR where (I) is the current through the given grid, now let I 0 be the current through segment AB and from symmetry we can say that I / 4 is the current flowing through all four segments meeting at A similarly, at B also. Thus I / 2 current flows through AB, hence answer will be
R/2