What is a consequence of excessive voltage drop in a circuit?

Excessive voltage drop in a circuit can lead to reduced efficiency and potential device malfunction because it means that not enough voltage is reaching the devices that rely on that circuit for proper operation. When the voltage drop is too high, devices may not function as intended or could operate inefficiently, leading to increased heat generation and potential failure. For example, if a light fixture requires a certain voltage to illuminate properly and experiences a significant drop in voltage, it may flicker, dim, or not turn on at all. This inefficiency can result in wasted energy and possible harm to sensitive electronics. Therefore, maintaining proper voltage levels is crucial for the reliable performance of electrical devices.