Final answer:
An ohmmeter used to measure the resistance of a blown fuse removed from the circuit would show an infinite resistance or indicate an open circuit, since the internal wire of the fuse is severed and no current can flow through it.
Step-by-step explanation:
The ohmmeter reading across a blown fuse that is removed from the circuit will be an infinite resistance or 'open circuit'. When a fuse is blown, it means that the metallic wire inside the fuse has melted due to excessive current, and since the wire is now severed, no current can flow through it. An ohmmeter measures the resistance of a component by passing a small current through it and measuring the voltage drop, which is not possible with a blown fuse as the circuit is not complete. Therefore, the ohmmeter would show an infinite resistance or indicate an open circuit, depending on the type of ohmmeter being used.