EE mod 1

Simply rubbing two materials together produces a charge of static electricity. Heat energy caused by friction frees electrons near the surface of one material and they move to the other material.

• Static Electricity

• Piezoelectricity

• Electrochemistry

• Dynamic Electricity

A difference in charge creates an electrical pressure, which moves current in one direction.

• Current

• Resistance

• Voltage

• Power

Is electricity from magnetism. The force of a magnetic field can drive electron flow. When any good conductor such as a copper or aluminum wire moves through a magnetic field, the force of the field causes free electrons to move in one direction across the conductor.

• Electrochemistry

• Magnetoelectricity

• Magnetic

  electricity

• Photoelectricity

Electricity from chemical reactions

• Electrochemistry

• Photoelectricity

• Magnetoelectricity

• Piezoelectricity

When small particles of light called photons strike a material, they release energy that can cause atoms to release electrons. When light strikes the surface of one of two plates that are joined together, energy from the light forces electrons to be released to the second plate. The plates build up opposite electrical charges. What is this type of electricity?

Carries electrical current without providing too much resistance to current flow

• Conductors

• Insulators

• Semiconductors

• Inductors

q=Pt

• Power

• Work

• Energy

• Resistance

The length of a conductor, the diameter of the conductor, type of conductor material, and temperature of the conductor affect the _____ to flow of current.

• Resistance

• Power

• Impedance

• Current

-       An electrical device that transfers an alternating current and voltage from one circuit to another using the induction phenomenon

• Transformer

• Circuit

• Breaker

• Fuse

Ideal transformer

• input<output

• input>output

• Input=output

• output + input