Find the resistance between A and B in the following circuit:
It is not the typical circuit that I see, but I'll give it my shot. Now part of mind is saying that the resistance should be 30 Ohms, because that is what it is between A and B. But then that would make this whole question too easy, and too good to be true.
But, lets suppose we find the Resistance of the two parallel resistors 30 Ohms, and 30 Ohms. We have:
I apologise in advance for drawing this by hand because I don't know how to draw computer version of circuits.
But still the Resistance between A and B is 30 Ohms. The answer at the back of the book is 10 Ohms, and my book shows no method whatsoever.
Why is the resistance between A and B equal to 10 Ohms?