2 March 2024

Without electricity as a scientific discovery more than a century ago, the world we know would not be as it is today. Over time, the use of this has been improved, to the point of having very good electrically conductive materials that help us optimize energy loss. Therefore, the current and its continuity is of the utmost importance for the processes, electrical tasks and equipment what is in the world

So today we will focus on explaining what the continuity of electricity is for, as well as the correct way to measure it. In case you don’t know what the direct current and alternating currentYou will discover this throughout this article.

What is electrical continuity used for?

To explain the use that can be given to electrical continuity, it is necessary to define it. This is a kind of path in which electrical current can flow and travel. In other words, it is a possible way for electrons to move from point A to point B. This does not mean that a switch that belongs to a circuit and that it is closed has no continuity. Rather it is the opposite, it has electrical continuity. Of course, there are several factors that must be analyzed in order to determine for sure if the circuit is open or closed.

The first use that we can give to this is to be able to determine if a circuit is open or closed, as we have just mentioned. If this is closed, it implies that there is a voltage, a resistance to the passage of current and the electrons can flow without any problem through the guided medium. Similarly, continuity tests only apply when there is no voltage in the circuit. Thus, continuity is a process that a person carries out to determine the state of the circuit to be studied.

How is electric current measured?

It is worth mentioning that the detection or measurement of electrical continuity can be used both for electronic devices and purely electrical equipment. To carry out this study, it is necessary to have a tester. Once you have the right instrument, you have to configure it in such a way that it allows you to measure continuity and not another parameter. For this, you have to locate yourself in the ohms section and choose one of the options in this section. To be more specific, you must select the mode in which, when making the measurement, the tester will sound. This tells us that, if there is continuity, everything will depend on whether it is being measured in an insulating or conductive material.

A first test is to make contact between the two legs, clamps or connectors that the tester brings. If you do, the meter device will beep. Now, imagine that you have a cable with two exposed ends. You are going to place one of them connectors on one side and the other, on the other side. If the cable is in perfect condition, the tester will sound indicating that there is continuity in that section of cable. In case there is no sound, this indicates that a section of wiring is damaged internally, so the current is not flowing through that wired medium.

This tool and way of measuring continuity is tremendously useful, since it is not only limited to copper cables or cables that have continuity, but can also be applied to other elements. Among these, we can mention:

  • Electric bulbs, incandescent and fluorescent.
  • twisted copper pair, coaxial cable and even network cable.
  • Electrical components such as diodes, transistors, capacitors, among others.
  • Whole circuits.

As you will see, the measurement with a multimeter or tester is not limited, but its application and use is varied. If you know the rest of the utilities, you may think that it is damaged and thus, make the changes that you think are pertinent to the board or circuit you are working on.

What is the unit for measuring electrical continuity?

Regardless of the limitations or capabilities of the multimeter or equipment used to make such measurements, they should always be made in ohms. It is a standard that applies perfectly to any part of the world and to an endless number of types of conductive cables, electrical and electronic elements.

What is alternating and continuous electricity?

In electrical engineering, knowing both terms is of vital importance, since everything will depend on what type of current is being used for each situation. On the one hand, we have direct current, which does not have any variation in frequency or intensity. In other words, if in the second one you have 5 amps, in the second 60 you will also have the same amount. Here there is no variation in energy, so it always remains constant. If we see it represented graphically, this is identified with a straight line in a Cartesian plane two dimensions.

On the other hand, we have alternating current, which alternates its values ​​as a function of time. If we represent it in a trigonometric function, the closest thing would be the sine function. That is to say, that it has positive and negative values ​​and, when added, they complete a cycle in which the current starts again, either from positive to negative values ​​and vice versa. Perhaps the most notable difference between one type of current and another is the amount of charge that exists in a circuit or medium in which energy is being circulated.

What is the continuity scale?

As such, it is a function that comes with a multimeter where you can physically make the selection of what you want to measure. For example, there is a section that only measures amperage or electrical current, while there is another that measures the ohms of a circuit, component, or power cable. It is thanks to such a selection that you can choose one of the many modes that this measuring device has.

How to know if a circuit has continuity?

The same device that we have mentioned and that you will use will tell you aurally if there is continuity or not. You just have to connect the terminals correctly and if there is a sound, it means that there is continuity, if there is no sound, it can mean two things:

  • That you are not making the connection well
  • What you are measuring or studying is damaged and has no continuity.

Examples of Electrical Continuity

An example of continuity, if we put it into practice and reality, is when you turn on your television, computer or any other similar device. When it is working, there is a transfer and a flow of electrons through a guided medium. While the equipment is running, means there is continuity throughout the system. This applies to things as small as a mobile phone, or something larger like a home, residential, municipal or national network. When the power supply is cut it is simply that, it does not mean that there is no continuity. In fact, there is still continuity, it is just the flow of energy that is not active.

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