The title is a bit cumbersome because my questions are a bit difficult to describe. Here is a photo from Practical Electronics for Inventors by Paul Scherz
I'm curious on a few things:
- How does the BNC cable for the oscilloscope actually work? Since the ground and the hot wiring are not connected to each other, how does a potential between the two elicit energy/work?
- What does the neutral wiring actually do?
- For the DC Power Supply, why do we have a ground, negative and positive? What exactly does positive and negative actually do here? Electrons are negative or positive in terms technical direction of current.
Any insight or resources on these topics is appreciated.