Ohms law.

Ohm's law establishes a relationship between current, voltage and resistance in a closed circuit (no current flows in an open circuit) and sounds "The strength of the current in the circuit is directly proportional to the applied voltage and inversely proportional to the resistance of the circuit."

Online calculator for Ohm's law below, allows you to find:
- Current through resistance and voltage;
- Voltage through resistance and current;
- Resistance through current and voltage.

Ohm's Law and Power Dissipation

Very often, through Ohm's law, they combine with the power of P, which is not included in it. It is very convenient for these purposes to use this diagram linking current, voltage, power and resistance. Each quarter of the circle is responsible for its physical value and it indicates all the ways to get it from 3 others.
Ohm

Ohm's Law is one of the basic laws of electricity. It was discovered by the German physicist Georg Ohm in 1827 and determines the dependence of the current flowing through a conductor on the electric field strength applied to it.

Ohm's Law is the fundamental law of electricity and is widely used in various fields of science and technology. For example, it is used to calculate electrical circuits, design electrical networks, and to determine the characteristics and properties of various electrical devices.

However, it should be noted that Ohm's law is valid only for linear circuits, that is, for circuits in which the resistance does not depend on the current flowing through the conductor. In reality, many electrical devices have non-linear characteristics, and in such cases, the application of Ohm's law can lead to inaccurate results.

It should also be noted that Ohm's law does not take into account the influence of temperature and other factors on the resistance of a conductor. For example, as the temperature rises, the resistance of a conductor may increase, resulting in a decrease in the current flowing through it.

In conclusion, Ohm's law is one of the basic laws of electricity, which determines the dependence of current on voltage and conductor resistance. It has a wide application in various fields of science and technology, but one should take into account its limitations and disadvantages when applied in real conditions.
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