In electronics there is a large number of units of measurement used to establish parametersone of these is ohm. This article will analyze the Ohm’s law so that you know in detail what it is for and what is its importance in circuits.
The first thing you will see are the key principles and the most important concepts that have the law of the German physicist Ohm. This will help you better apply the Law.
Finally, you can know the relationship between voltage, amperage and resistance considering the atomic structure. Become a true electronics expert.
What is OHM’s Law and what is it for in modern electronics?
The Ohm’s law is a physical explanation that denotes the behavior of the current in a circuit, which is affected by the . In this way it can be understood that the intensity increases when the voltage also does, without changing the resistance.
Instead, the current decreases when it increases proportionally to the endurance, taking into account that the voltage has not been modified. These relationships can be expressed in the formula V=IxR; where V is the voltage, I the capacity of the current in amperes and R the resistancewhich is measured in ohms. Modifying the main formula yields that current in amps is equal to voltage divided by resistance. And the amps is equal to the volts divided by the ohms.
This law owes its name to the German physicist George Simon Ohmwhich presented his theory after various experiments in 1827 through the article called The galvanic circuit, mathematically analyzed. Ohm’s Law is used to accurately determine the capacity that the elements that are included in a bus must contain. In this way you can determine the necessary voltage and what type of resistance must be added so that the circuit is not damaged.
Key principles of OHM’s Law Which are the most important and decisive?
The basic principles of OHM’s law are:
- Electronics has three magnitudes that are related to each other; resistance, current (or amperage), and potential difference, also called voltage.
- Ohm’s law can be applied in the whole or part of a circuitwithout affecting the rest.
- If the voltage is kept constantthe current decreases when the resistance increases.
- When the resistance remains unchanged, the intensity of the current will increase when the voltage increases.
- From the 2 previous statements it follows that resistance prevents electric current and voltage increases it.
- The current voltage graphs They are represented by a straight line which passes through the coordinate point 0.
- The general formula is V=IR => with V=voltage; I=amps and R=ohms.
What are the most important concepts of OHM’s Law to remember?
The most important concepts offered by OHM’s law in modern science are:
current, voltage and resistance
Current is defined as the constant sequence of charge that is transmitted by a conductor, is measured in amps at a given time. Voltage is the electric current that is distributed from a conductor, depending on the resistance. while the endurance It is the difficulty that it offers to the flow of charges that are transmitted in a conductor.
atomic structure
The electrical charge that objects have depends on their atomic structure.with the electron being the basic unit of measurement of what a charge has.
conductive substances
There are substances that behave differently in current conduction due to the movement of its electrons in the atomic structure. From this it follows that there are elements drivers Y no drivers. For example, him copper and the Prayed, used in current electronic devices are excellent conductors due to the atomic crystalline structure they have.
Conductors according to OHM’s law
Also called ohmic conductors, are those that comply with the law of the German physicist. where to one constant temperature resistance remains unchanged and does not modify the electric current. in turn are non-ohmic conductorswhich make their resistance vary depending directly on the voltage.
resistant substances
There are elements that are resistant to the movement of electric charge, which are called insulators. This is due to the atomic crystalline structure that wood and certain plastics have, for example.
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