What is an electric field? Why is it important? How do you read an electric field diagram and what information can we get from it?
0:00 - What is an electric field?
2:56 - Important points
4:23 - What does the electric field tell us?
6:06 - Electric field equations
8:54 - Drawing an electric field with superposition
10:42 - Field line diagrams for two point charges (+ + and + -)
13:06 - Field line diagrams for multiple point charges
Important points:
- FIELD LINES CAN NEVER CROSS
- The field line density shows the strength of the field (closer lines = stronger field)
- Electric field = force per unit charge
- Field lines show force that will act on a positive test charge
