What does an open circuit in a car mean?

[DiBrooke]

An open circuit in a car's electrical system refers to a circuit state where there is no current passing between two points or where the conductor connection has an extremely high impedance (or resistance) value. Here is an introduction to the relevant content: 1. Meaning: When a branch between two points in the circuit is open, the potential difference between these two points is called the "open-circuit voltage," which can be measured with a voltmeter. It is commonly referred to as a broken circuit (though there is a distinction: an open circuit means the circuit is not connected, while a broken circuit means it is unknown where the disconnection occurs). It refers to a situation where a break in the circuit causes the resistance to become infinite, preventing normal current flow and resulting in zero current in the circuit. 2. Break point: The voltage across the break point equals the power supply voltage, which generally does not damage the circuit. Possible causes include broken wires or disconnection of electrical devices from the circuit.