Concept explainers
The change in an
Explanation of Solution
Introduction: An electromagnet is a temporary magnet created when a current carrying wire wrapped around an iron core.
An electromagnet behaves like other magnets when there is current in the solenoid.
The electromagnet’s one end is a north pole, and the other end is south pole. When placed in a magnetic field, an electromagnet will align itself in the direction of the magnetic field lines. An electromagnet will also exert a magnetic force on other magnets.
All magnets are metals, but not all metals are magnets.
Aluminium not being a magnet weakens the electromagnet’s magnetic field, if the iron core is replaced by it.
The magnetic field will be only due to the wire looped around the solenoid.
Conclusion: The electromagnet’s magnetic field decreases if the iron core is replaced by an aluminium core.
Chapter 7 Solutions
Glencoe Physical Science 2012 Student Edition (Glencoe Science) (McGraw-Hill Education)
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