electromagnets 0.0 / 5 ? ScienceElectricityGCSENone Created by: Morgan2203Created on: 27-11-17 20:46 how can the magnetic field be increased? by coiling the wire, increase the current flowing or add a core made from magnetic metal 1 of 10 how is a weak magnetic field formed? it is formed when an electric current is passed through the wire 2 of 10 how can you test the strength of the electromagnet? you can see how many paper clips it can pick up. 3 of 10 what do the brushes do? they enable the wires to make contact without tangling. 4 of 10 are electromagnets stronger and what can they do? they are stronger than permanent magnets and can be turned off. 5 of 10 what are electromagnets used for? they can be used in multiple ways such as heavy lifting in car breakers yards 6 of 10 what happens in a DC motor? the wire and core can move freely 7 of 10 if the lines are close together what does it mean? it means the more powerful the magnetic field. 8 of 10 what are the names of the three magnetic metals? iron, cobalt and nickel 9 of 10 what happens when two magnets are brought near each other? they will either attract or repel depending on the north or south-seeking pole. 10 of 10
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