producing more amps in a way you produce more preasure with a hose?

Question

turn yoru hose on and it has water come out, but you put your thumb on it and it makes more preasure. Could you, or has it already happend, apply that to electricity?

Say put "your thumb" over a wire and make a higher amount of Current? This has probably already been thought of and made but if you could answer i would appriciate it.

Answer 1

the most common comparison of electric to water goes this way. water pressure is the "voltage" potential or tension as they say in UK. Water current flow is the electrical current flow or amperage.

Blocking the flow is reducing the current, not increasing it. Depending on the system, this blockage might increase the potential or pressure at the nozzle. This is because the pressure or voltage drop in the pipe/wire caused when it was flowing is now eliminated, so you then feel the full potential of the source (battery or water tank).

An open water line is akin to a short circuit in electric. The maximum amperage/water flow happens, limited only by the resistance in the supply pipe/wiring. The comparison kind of stops there because electricity always requires a return circuit, and water simply works against gravity.

Answer 2

In the case of a hose pipe, if you reduce the diameter (by thumbing) resistance to the flow of water increases and the pressure goes up. With a conductor, if you add a thinner conductor (throttling or thumbing equivalent), the current decreases and the resistance increases. If you equate pressure with resistance, yes, it goes up.