I'm sure this is rudimentary, but I'm very inexperienced in anything practical with electronics. Would like to try to get a 3volt battery go run some LEDs. I thought I could just take two AAA batteries (1.5v each) and wire them in series to get approximately 3v.
So using some tape and solder I ran a (green) wire from the butt terminal of one battery to the head of the other:
However, when I try to test the voltage, I do not get what I expected
I thought hooking batteries together in series should double the voltage? What am I missing?