Belastningsspænding

Belastningsspænding, often translated as load voltage or terminal voltage, refers to the electrical potential difference measured across the terminals of a power source, such as a battery or generator, when it is supplying current to an external circuit. This is in contrast to the open-circuit voltage, which is the voltage measured when no current is flowing. The difference between the open-circuit voltage and the belastningsspænding arises due to the internal resistance of the power source. When current flows, there is a voltage drop across this internal resistance, reducing the voltage available at the terminals for the external load. This phenomenon is described by Ohm's law applied to the internal circuit of the source. Understanding belastningsspænding is crucial for determining the actual power delivered to a load and for assessing the performance and efficiency of a power source. For instance, a battery's ability to power a device is directly related to its belastningsspænding under operating conditions. Factors such as the magnitude of the current drawn by the load, the temperature, and the state of charge of the power source can all influence the belastningsspænding.