How come I always see videos with what seems like a random amount of mA flowing from a battery with a certain amount of voltage?
For example, what if a wire had 0.13 ohms resistance and a battery had 5V electrical difference. That would mean that 38 Amps should be the current (right?).
I=V/R I=5V/0.13ohms I=38A (about)
Okay, so I'm editing this now using internal resistance, of about 1ohm.
This gives about 4.5A, so is this correct?
Why are common schematics showing some amount of mA shouldn't it be something like what I've shown, or do they have hidden resistors?