Explain the difference between a permanent magnet and an ...

[littleanan]

Explain the difference between a permanent magnet and an electromagnet.
 
  What will be an ideal response?

Question 2

What is the theoretical evaporation rate?
 
  A) 1 percent of the water supplied for every 10F of cooling
  B) 5 percent of the water supplied for every 15F of cooling
  C) 5 percent of the water supplied for every 10F of cooling
  D) 0.5 percent of the water supplied for every 1F of cooling

[recede]

Answer to Question 1

A permanent magnet is a piece of soft iron that has its dipoles aligned. An electromagnetic is created when current is passed through a coil of wire and flux lines are created around the wire.

Answer to Question 2

A

[littleanan]

Thank you!

[recede]

Always glad to help...