[DOC] [TLE] Questions and Answers - How do I make an electromagnet? [PAR] All you need to do is wrap some insulated copper wire around an iron core. If you 
attach a battery to the wire, an electric current will begin to flow and the iron ... 
Follow these steps if you would like to build the electromagnet described in our ... 
the wire around the nail, make certain that you wrap the wire all in one direction. [DOC] [TLE] Section 2 [PAR] In this Investigate, you will map the magnetic field of a current- carrying coil of 
wire (a solenoid) and compare it to that of a ... 1. Wind 50 turns of wire on an end 
of a drinking straw to form a solenoid as shown ... generator to send a current 
through ... you made with the bar magnet. ... are tiny bar magnets that exist within 
iron. [DOC] [TLE] Midterm Exam - Problems and Solutions - How Things Work [PAR] Mar 8, 1995 ... When current passes through the coil of copper wire, the steel bolt becomes 
magnetic. ... These copper-bolt electromagnets don't become very magnetic 
when ... (B) both the bolt and the coil around the bolt are made of copper so that 
... Unfortunately, one of the individual speakers is broken, so you buy an... [DOC] [TLE] Electromagnetism, Magnetism - Electronics Tutorials [PAR] If you wrap a wire around an iron core, such as a nail, and you send ... A bare 
wire would cause an electrical short and the current would then run ... This is 
especially true if the core is made of soft iron, which quickly loses its magnetism. 
... When electricity passed through a wire, a magnetic field is created around the 
wire. [DOC] [TLE] Electromagnet - Wikipedia [PAR] An electromagnet is a type of magnet in which the magnetic field is produced by 
an electric ... The wire turns are often wound around a magnetic core made from 
a ... When a current was passed through the coil, the iron became magnetized 
and ... A portative electromagnet is one designed to just hold material in place; an
... [DOC] [TLE] Electricity science project : 200-amp cable [SCIENCE HOBBYIST] [PAR] Think: In stranded cable, the DC electric current divides equally among all the ... 
Wrap the coil with black electrical tape so that it resembles a circle of heavy black 
cable. Send 1.0 amperes into the coil's connections, and you have a circular "
cable" ... And whether you send 100 amps through one wire, or 1.0 amps through
... [DOC] [TLE] Physical Science - Gaiser Middle School [PAR] Have you ever been on a train? ... The magnets that you are used to are not 
found in nature, but they are made ... One pole of the magnet is labeled the north 
pole. ... Note how these iron filings line up on the magnetic field lines around this 
bar magnet. ... Run a direct current of electricity through the wire and the steel bar 
will... [DOC] [TLE] Electromagnets - Magnet Man - Cool Experiments with Magnets [PAR] Wrap your fingers around the coil in the same direction as the current is ... 1. 
What will the core be made of 2. What magnetic flux density are you trying to 
achieve ... as you go through these steps that once you get an answer, you may 
have to go ... 1. Use magnet wire with an enamel coating 2. If winding it onto a 
metal bar or... [DOC] [TLE] All About Everything, All About Atoms, Current Electricity, Bump! [PAR] Atoms are so small you can only see them through a microscope. There are ... 
These are called protons and neutrons. ... Current electricity is made in power 
plants and flows along wires and cables. ... Light, heat, or a chemical reaction 
can make electrons move from one atom to another. ... Wrap the wire around an 
iron bar. [DOC] [TLE] Science February 27.pdf [PAR] This is the fourth directed question for team B. You have 20 seconds to answer ... 
Wrap a wire around an iron bar, send a current through the wire and you've made 
a what? ...

Question: Wrap a wire around an iron bar, send a current through the wire & you've made one of these
Answer: an electromagnet