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R murali

Jul 5, 2014

Write down the differences between electromagnet and permanent magnet

What is difference between Permanent magnet and electromagnet?

Answers(1)

Answer

Amarnathreddy M

 
Write down the differences between electromagnet and permanent magnet
What is difference between electromagnet and permanent magnet?
Distinguish between Permanent magnet and electromagnet
What is difference between Permanent magnet and electromagnet?
 
                      Permanent Magnet                           Electro Magnet
  1. The South – North polarity of a permanent magnet is fixed and they cannot be changed
 
 
  1. Its strength cannot be changed or altered.
  1. The South – North polarity of a permanent magnet can be changed by changing the direction of the current in the coil.
 
  1. Its strength can be changed by changing the current in it or by changing the number of turns in it.
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