1. Electricity & Magnetism Standards
5d. Know the properties of transistors & the role of transistors in electric circuits.
5e. Know charged particles are sources of electric fields and are subject to the forces of the electric fields from other charges.
5h. Know changing magnetic fields produce electric fields, thereby inducing currents in nearby conductors.
5i. Know plasmas, a fourth state of matter, contain ions or free electrons or both and conduct electricity.

2. Electric Field Lines

3. Electrical Field Lines
The force of the electrical charge around a particle
Fills the space around the particle (on all sides, all directions)
Shown with arrows

4. Direction of Field Lines
Direction is determined with a positive test
What force does each type of charge feel from the + test?
Negative = Attraction
Towards charge
Positive = Repulsion
Away from charge

5. Strength of Field Lines
The strength of the field lines is shown by HOW MANY lines there are around the particle
The more lines the stronger the force

6. Field Lines Radiate
This means they go in all directions from the particle, even if there is no other charge near it

7. Examples