Ohmtörvényben

Ohmtörvényben, also known as Ohm's Law, is a fundamental principle in the field of electrical engineering and physics. It describes the relationship between the current flowing through a conductor, the voltage applied across it, and the resistance of the conductor. The law is named after the German physicist Georg Simon Ohm, who formulated it in 1827.

The mathematical expression of Ohm's Law is given by the formula:

V = I * R

where:

- V represents the voltage (measured in volts),

- I represents the current (measured in amperes),

- R represents the resistance (measured in ohms).

This formula can be rearranged to solve for any of the three variables. For example, to find the current, the formula can be rearranged to:

I = V / R

Similarly, to find the resistance, the formula can be rearranged to:

R = V / I

Ohm's Law is widely used in electrical engineering for designing and analyzing electrical circuits. It is also a key concept in understanding the behavior of electrical components and systems. The law is based on the assumption that the temperature of the conductor remains constant, which is often a reasonable approximation for many practical applications. However, for more precise calculations, especially at varying temperatures, other factors such as temperature coefficients of resistance must be considered.