How was the electromagnet scene filmed?

Question

In the first episode of season 5 of Breaking Bad, a large electromagnet is rigged up in a truck, and placed next to a building. The camera shows the contents of the building flying across the room and clinging to the wall nearest the electromagnet. Light fixtures are seen swaying toward the magnet, and shelves are seen toppling, etc.How was this scene filmed? Did they really rig a large electromagnet on the set?

Answer 1

Most of the time 3D objects are created on the computer and composited in. Sometimes the actual props in the shot are influenced by air canons, invisible wire or giant fans.