What three factors limit inrush current?

The correct answer focuses on the factors that directly influence inrush current, which is a significant consideration in electrical systems. Inrush current refers to the initial surge of current that flows when an electrical device is first turned on.

Applied voltage is critical because the higher the voltage applied to a device, the greater the potential for inrush current. When a device such as a motor or transformer is activated, the immediate pull of current is influenced by the voltage supplied.

The resistance of the wire also plays a pivotal role. Resistance affects how much current can flow and determines how much voltage drop occurs in the wiring when current begins to flow. This, in turn, impacts the amount of inrush current because it dictates the available current depending on the resistance.

Lastly, the flux change of the magnetic field is specifically relevant in inductive devices like motors and transformers. When these devices are powered on, the magnetic field must establish and any changes in this field create a counter electromotive force (back EMF) that initially contributes to the inrush current. An abrupt change in the magnetic field correlates to a high rate of current flow at startup.

Together, these factors comprehensively encapsulate the dynamics influencing inrush current, emphasizing the interplay of voltage, wire resistance,