Current Analogy

In this analogy the mathematical equations of the rotational mechanical system are compared with the nodal mesh equations of the electrical system.

Current analogy. A fire hose hooked directly to a hydrant has lots. Maintenance on high voltage transmission lines is sometimes done with the voltage live by. Mr amp the ammeter stands in the corridor counting children electrons and timing them this explains why the ammeter is wired in series. In a direct current dc electrical circuit the voltage v in volts is an expression of the available energy per unit charge which drives the electric current i in amperes around a closed circuit.

But this is a drive through bank and cars travelling through pick up one jewel from each vault. I have to declare an interest and say that i am not a fan of the water in pipes analogy to put it mildly though i do use a bath to try and explain parallel circuits. The impedance analogy makes force and voltage analogous while the mobility analogy makes force and current analogous. Ks3 4 children can struggle with the concepts of current and voltage and with how to correctly connect an ammeter voltmeter.

Want a scary job. Similarly there is a torque current analogy for rotational mechanical systems. By comparing equation 4 and equation 6 we will get the analogous quantities of rotational mechanical system. Current is like the number of children running through a corridor sec.

Electric current flow is proportional to voltage difference according to ohm s law and both the bird s feet are at the same voltage since current flow is necessary for electric shock the bird is quite safe unless it simultaneously touches another wire with a different voltage. When describing voltage current and resistance a common analogy is a water tank. The analogy revolves around a deceptively simple mental image and as a teacher this is the time to have some fun. Click any part of it for further details.

This nicely shows that a big voltage causes a big current. In this analogy charge is represented by the water amount voltage is represented by the water pressure and current is represented by the water flow. Imagine a bank with one or more vaults each containing a supply of jewels. A simple analogy would be to compare a garden hose to a fire hose.

A common choice is to make pairs of power conjugate variables analogous. Let us now discuss this analogy. So for this analogy remember. A narrow constriction means a big resistance so you also have the relationship big resistance means small current.

The garden variety he he has significant pressure voltage and moderate volume amperage capacity and works well in the yard. I tried this analogy.