I know that voltmeters are commonly in parallel and ammeters are commonly in series. I believe that the voltmeters in diagrams 2 are actually in series. How am I wrong?
In Diagram 4, I don't understand how the voltmeter is connected in parallel. I don't see how the Ammeter is connected in Series. Can you explain how the connection of the voltmeters are in parallel? Usually, when I see a parallel connection, I see multiple resistors as seen in diagram 1. I doubt that the Voltmeters in figure 2 and 3 are in parallel.
How is the ammeter in diagram one in series? I know that series is defined as "there is only one path for the electrons to take between any two points in this circuit." But the electrons can either take the path through the resistor or through the ammeter. More likely, they'll go through the path of the ammeter.
Why do voltmeters have high resistance? How can "high resistance affect as little as possible the current that flows in the actual circuit when in parallel with it"? Why is it that " If the voltmeter wasn't connected in parallel it couldn't measure the potential across a particular circuit or circuit component - which is the purpose of a voltmeter."? How can keeping a voltmeter in parallel reduce the effect of the resistance on the circuit? Can you mathematically explain the quotations that I wrote?
What would happen if a voltmeter were wired in series?