Question

The model shows a simple electromagnet that does not attract metal objects.
Battery
Which observation or inference is correct?
(1 point)
The metallic objects lost their magnetic domains.
The battery was replaced with the lower voltage.
A model needs a switch in order to work.
The wire was not connected to the source.

Answer 1

The wire was not connected to the source.

Reason: If the circuit is open (wire not connected) no current flows through the coil, so it won’t produce a magnetic field to attract the metal objects.