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Physics
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26 Sep 2019

When does an iron rod become a magnet?

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Beverley Smith
Beverley SmithLv2
7 Mar 2019
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Related textbook solutions

Physics: Principles with Applications
7th Edition, 2013
Giancoli
ISBN: 9780321625922

Related questions

5. A plastic rod has been rubbed with a scratchy brownpapertowel. You have carefully tested the rod and found that it hasanegative charge. If you place the rod on your handy dandyspinner,and then bring a magnet near it, the rod will


be repelledby the magnet
be attracted to themagnet.
depends on whichend of the magnet you hold near the rod.
be nietherattracted nor repelled by the magnet.

The force a magnet exerts on another magnet, on iron or a similar metal, or on moving charges is

an electric force.
a magnetic force.
proportional to the charge of the magnet.
proportional to the mass of the magnet.

 

 

Which is a key difference between electric charges and magnetic poles?

a. Like electric charges repel but like magnetic poles attract. 
b. An electrically charged rod attracts an electrically neutral object but a magnet does not attract an unmagnetized chunk of iron.       
c. In electricity, unlike charges, repel, but in magnetism, unlike poles attract. 
d. Magnetic monopoles exist but isolated electric charges are never found. 
e. Electric charges can be separated while magnetic poles always occur together as opposite poles of equal strength.

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