Electromagnets in Depth

Question 1

what can electromagnets do that magnets cannot?

Answer 1

electromagnets can be turned off unlike normal magnets

Question 2

what are the 3 ways of increasing the energy of an electromagnet?

Answer 2

1. adding an iron core
2. increase the current
3. make the solenoids tighter

Question 3

Describe how you could find the magnetic field pattern of a permanent bar magnet.

Answer 3

iron fillings:
1. bar magnet, paper, fillings
compass:
2. the needle will point in the correct direction

Question 4

what are the coils of wire called?

Answer 4

solenoids

Question 5

the more solenoids there are….

Answer 5

….the more energy the magnet will have