Explain how a metal can become a temporary magnet?

Answer 1

Real quick FYI, temporary magnets are also called electromagnets :) A really simple electromagnet is an iron nail with with copper wire (can be insulated or uninsulated) wrapped around it. At the ends, attach a 9-volt battery to the negative and positive terminals. And voila! To "turn-off" the magnetism, just remove one of the ends from the terminal.

Answer 2

To turn a piece of iron into a temporary magnet, wind a coil of (insulated) copper wire around it and run a DC current through the wire. The iron will become the core an electromagnet -- the one you just constructed. As long as direct current flows through the coil, the iron core will attract ferromagnetic materials.jkghyjy

Wrap many coils of lacquered copper wire round an iron nail. When electricity is sent through the coils, the nail becomes magnetised. The iron is an electromagnet as long as the power is on.

When a piece of iron is brought near the magnet it also becomes a temporary magnet.

Answer 3

when electricity passes along a metal piece the electrons are aligned on one side making it the negative side and the other automatically becomes the positive or in other words, the piece of magnet is polarised and it behaves like a magnet.

if the amount of elctricity or no. of turns or both are increased the magnetic strength of the piece increases.

Answer 4

A permanent magnet is what it says on the tin really - it will always be magnetic - you cannot turn it on and off, so it cannot be a temporary magnet.

Answer 5

Their magnetic properties disappear after the magnetic field is removed

Answer 6

1. contact with a magnetized body over time

2. friction

3. assymetrically applied force (ex: centrifugation or percussion)