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.

Electric Field Lines

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

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

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

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

Examples