OHMIC RESISTANCE Meaning and
Definition
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Ohmic resistance, also known as ohmic impedance or simply resistance, refers to the opposition that an electrical conductor presents to the flow of electric current. It is a fundamental concept in electrical and electronic engineering and is denoted by the symbol R. Ohmic resistance is measured in units called ohms (Ω).
The term "ohmic" is derived from Ohm's law, which states that the current passing through a conductor between two points is directly proportional to the voltage across the two points and inversely proportional to the resistance of the conductor. In other words, for a given voltage, a lower resistance allows a higher current to flow, while a higher resistance restricts the current.
Ohmic resistance is mainly associated with metal conductors, where the electric current is largely carried by the movement of free electrons. In these conductors, the resistance is independent of the applied voltage or current, meaning it remains constant regardless of these factors. This behavior is in contrast to other types of resistance, such as reactive or complex impedance, which may vary with frequency or phase angle.
Ohmic resistance can also be influenced by factors like temperature and material composition. As temperature rises, the resistance of most conductors tends to increase, following the principle of temperature coefficient of resistance. Additionally, different materials may have different resistivities, which determines their inherent resistance.
Overall, the concept of ohmic resistance is crucial in various electrical applications, including circuit analysis, power distribution, and the design of electronic devices, as it helps to understand and regulate the flow of electric current within a system.
Common Misspellings for OHMIC RESISTANCE
- ihmic resistance
- khmic resistance
- lhmic resistance
- phmic resistance
- 0hmic resistance
- 9hmic resistance
- ogmic resistance
- obmic resistance
- onmic resistance
- ojmic resistance
- oumic resistance
- oymic resistance
- ohnic resistance
- ohkic resistance
- ohjic resistance
- ohmuc resistance
- ohmjc resistance
- ohmkc resistance
- ohmoc resistance
Etymology of OHMIC RESISTANCE
The term "Ohmic Resistance" is derived from the name of German physicist Georg Simon Ohm (1789-1854) who formulated Ohm's Law, which describes the relationship between current, voltage, and resistance in an electrical circuit.
Ohm's Law states that the current flowing through a conductor is directly proportional to the voltage applied across it and inversely proportional to the resistance of the conductor. Resistance, in this context, refers to the opposition offered by a material to the flow of electric current.
Therefore, the term "Ohmic Resistance" is used to refer to the resistance in a circuit that obeys Ohm's Law, meaning the resistance remains constant regardless of the applied voltage or current. It is an indication that the circuit has a linear relationship between voltage and current, behaving in a predictable and proportional manner according to Ohm's Law.
