What is the ohmmeter reading across a good fuse that is removed from the circuit?

A good fuse that has been removed from the circuit should show a reading of 0 Ohms on an ohmmeter. This indicates that the fuse is intact and offers no resistance to the flow of electrical current.

When a fuse is functioning properly, it should essentially act as a conductor, allowing current to pass without any significant resistance. The ohmmeter measures the resistance, and in the case of a good fuse, the reading should be zero. This signifies that there is a complete electrical connection within the fuse element, meaning the fuse can effectively protect the circuit it is designed to safeguard by allowing current to flow as intended without interruption.

In contrast, if a fuse were to have blown or been damaged, it would show a reading of infinity, which indicates an open circuit; however, that is not the case for a good fuse. Therefore, the correct understanding of the reading across a good fuse is crucial for diagnosing circuitry issues and ensuring system functionality.