How is the electrical current of an electronic device defined? Why are there devices that work with the same voltage, for example, 220V, but consume different current, what defines this? To understand the answer to this question it is important to know what electrical voltage is, what electrical current is and what electrical resistance is, and that’s what we’re going to talk about in this article, come on guys!
Electrical quantities, what are they?
These words TENSION, CURRENT and RESISTANCE refer to the three electrical quantities and for those who do not know yet, an electrical quantity is a way of giving a number to a phenomenon, so in this case we are giving a number to three electricity phenomena.
To start answering this question in a very simple and summarized way, it is necessary to understand that tension, current and resistance are inseparable friends, that is, whenever you hear about one the others will be there too! These three quantities refer to phenomena related to electrons that are the basis of all electricity.
Electric current, what is it?
The electric current is the ordered movement of the electrons and whenever an electron moves there will be an electric current! In order for electrons to move in an orderly manner, they need a path and these paths are the conductors such as the copper cable.
Electrical resistance, what is it?
Whenever something moves, there are forces opposing that movement. For example, if you start walking you will have several factors that will resist your walk, for example, if the wind is for or against or if the day is hot or cold. In electricity whenever an electron moves, it undergoes a resistance that is called an electrical resistance! To facilitate understanding, resistance can be defined as the opposition that a given material offers to the passage of electric current.
This resistance of the path through which it passes has a direct connection with the thickness of the cable, that is, this is one of the factors that makes the movement of electrons easier or more difficult, making that certain cable have more or less electrical resistance. . Understanding this is extremely important because there will always be resistance in any driver.
Electric voltage, what is it?
Finally, let’s talk about electrical voltage and we can say that voltage is the force that sets electrons in motion, that is, it is the force that creates an electrical current. And now that you know the definition of these inseparable quantities, it becomes easier to answer what defines the electrical current of an appliance.
In this video below the Mundo da Elétrica channel, you have all this information passed in this article in a very dynamic way and if you think it can help you understand this subject, it is worth checking out!
Electric current, how is it defined?
All internal components of an electrical and/or electronic device such as cables, resistors, transistors and capacitors are the paths through which the electric current will circulate, and all of these paths create a “resistance”, which is defined as inductive impedance and reactance capacitive. Basically it is as if the device communicates to the electrical network what resistance it has and what current it will need to work at that determined voltage.
So, what defines the electrical current of a device is precisely the internal “resistance” of this device, always taking into account the voltage to which it is connected. With that we hope to have answered this question about what defines the electric current in an electrical or electronic device, but if you still have any questions, leave in the comments that we will be happy to answer!