Download presentation
Presentation is loading. Please wait.
1
Magnets and Electromagnets
15/04/2019 Magnets and Electromagnets W Richards The Weald School
2
Magnetic or non-magnetic?
Magnetic or not? 15/04/2019 Material Magnetic or non-magnetic? Conclusion: only certain metals (iron, nickel and cobalt) are magnetic (and anything made from this, like steel)
3
Magnetic fields 15/04/2019 N S
4
Attracting and Repelling
15/04/2019
5
15/04/2019 N S Magnet: Solenoid:
6
(The poles can be reversed by reversing the direction of the current)
Electromagnets 15/04/2019 The strength of an electromagnet can be increased by doing three things: Increasing the voltage Increasing the number of coils Inserting an iron core (The poles can be reversed by reversing the direction of the current)
Similar presentations
© 2024 SlidePlayer.com Inc.
All rights reserved.