Electricity as a shower (Understanding Volts and Amps)

Normally electricity and water don’t mix, however today we’re just talking analogies. When working with electronics, it’s very common to see questions along the lines of “My project requires X volts, is it okay to use Y power source” or “My Raspberry Pi requires 1 amp, will a 2 amp power supply burn it out?”. If you don’t know electricity, this makes perfect sense to ask. Rather than answer specific...