Rafneitandi

Rafneitandi is an Icelandic term that translates to "electricity resistor" or "current limiter." It refers to a component in an electrical circuit designed to impede or control the flow of electric current. This is achieved by converting electrical energy into heat, a process governed by Ohm's Law, which states that the current through a conductor is directly proportional to the voltage across it and inversely proportional to its resistance.

Resistors are fundamental building blocks in electronics and are used in a vast array of applications. They can be found in simple circuits to limit current to sensitive components like LEDs, or in more complex applications such as voltage dividers, filters, and timing circuits. The physical construction of a resistor can vary greatly depending on its intended use and power rating, from small surface-mount components to larger wire-wound resistors capable of dissipating significant amounts of heat. The value of a resistor is measured in Ohms (Ω), and its tolerance indicates the acceptable deviation from its stated resistance value.