As far as your electical question is concerned, you’ll have to give me more information. If the problem is you think there’s no power, then to test the circuit you need a meter; if you’re trying to allocate the number of outlets you can run off of a single circuit, then Ohm’s law applies...
Figuring how much load to allocate to a certain circuit is the job of an electrical engineer and ohms law.
Finding an open in a simple household circuit can be done with ohms law and a calculator, but why do that when a meter does the same job much faster and easier.