Please enable JavaScript.
Coggle requires JavaScript to display documents.
Physics - Magnetism - Coggle Diagram
Physics - Magnetism
Magnetic Field Lines
-
cannot see a magnetic field, but you can observe its effects.
-
-
-
Compass
made of a magnetic needle mounted on a pivot (so it can turn freely) and a dial to show the direction
-
-
-
What can magnets do?
-
-
-
Attract and Repel
if you bring a north pole and a south pole together, they attract and the magnets stick together
if you bring two north poles together, or two south poles together, they repel and the magnets push each other away
opposite poles attract, and like poles repel.
-
Electromagnets
When electric current flows in a wire, it creates a magnetic field around the wire
-
A simple electromagnet comprises a length of wire turned into a coil and connected to a battery or power supply
-
-
-
-
-