The three most basic components of electricity are voltage, current, and resistance. VOLTAGE is like the pressure that pushes water through the hose. It is measured in volts (V).
How is a water system similar to an electrical circuit?
Water flowing in pipes is a lot like electricity flowing in a circuit. … The pipe is like the wire in the electric circuit. The pump is like the battery. The pressure generated by the pump drives water through the pipe; that pressure is like the voltage generated by the battery which drives electrons through the circuit.
What is the relationship between water pressure and voltage?
In the final part of the lab, students will learn that the flow rate of a liquid through a tube decreases when you lower the water pressure by moving the water source to a lower elevation. In this analogy, pressure plays the role of voltage. For a fixed resistance, a decrease in voltage leads to a decrease in current.
What is basic electrical knowledge?
In order to make sense of the Code, you must first understand basic electrical concepts such as voltage, amperage, resistance, Ohm’s law, wattage, circuit theory and others. … An obvious foundation for all electrical installations is a thorough knowledge of the laws that govern the operation of electricity.
What does a voltage drop test?
Voltage Drop testing is a method of electrical diagnosis that can quickly locate high-resistance problems in a circuit. … Increases in resistance increase the voltage drop. Whenever checking Voltage Drop, current must be flowing in the circuit. Each load device must receive its rated voltage to operate properly.
Does voltage make electricity flow?
Voltage generates the flow of electrons (electric current) through a circuit. The specific name for the source of energy that creates the voltage to make current flow is electromotive force. This relationship between voltage and current is given by Ohm’s law.