1. What happened to the metallic materials upon placing them near iron nail? 2 on which set up de metalle materiale attract more in an electromagnet? 3. How many colls in the Ironnal attract more metallo materials? 4. Does the strength of electromagnet increase as the number of coils and sources of electricity increase? Why? 5. Based on your observation, what factors affect the strength of the electromagnet?
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Answer:
1.What happens when you place the iron nail near the iron filings?
Soft iron is a good temporary magnet. A steel nail will retain a lot of its magnetism once the current in the coil is switched off. Iron filings are chips of soft iron which become temporary magnets when in a magnetic field, and so they line up north to south indicating the direction of the magnetic field.
2.Which of the following will make an electromagnet stronger?
The four different ways to make an electromagnet stronger are: Increase more number of turns to the coil. Increase the flow of current through the coil. Wrap the coil around the iron piece.
3.How many metallic materials are there?
Metallic Materials include elemental metal and compound or alloy. There are 86 metals with distinct characteristic properties, and a limited number of these metals have engineering importance. Steel accounts for about 80% of all metallic materials used in different applications.
4.How about more coils of wire around the nail? (Answer: An electromagnet can be made stronger in two ways: increasing the amount of electric current going through the wire or increasing the number of wire wraps in the coil of the electromagnet.)
5.Factors that affect the strength of electromagnets are the nature of the core material, strength of the current passing through the core, the number of turns of wire on the core and the shape and size of the core.
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