Intro to Electricity

What IS Electricity?

A form of energy resulting from the existence of charged particles

How do we harness this ENERGY?

Conductor

• Something that allows electricity to flow• Examples;– metal– Water– air

Insulator

• something that does NOT let electricity flow• Examples– Glass– Plastic– Rubber– Porcelain

Power Source

• Something that supplies electricity

• Examples;– Battery– Generator– solar panel

Battery

• Portable power source that has a positive and negative. The negative has extra electrons. They want to move to the positive side

Circuit

• path for electricity to flow

Load

• Something that uses electricity• Example– Toaster– Ipod– Dvd player

Short Circuit

• unwanted contact of wires or parts in a circuit resulting in damage or malfunction of the circuit– Example: two bare wires touching

Voltage, Resistance & Current

Voltage (V)

• The “push” of electricity in a circuit• Measured in VOLTS (V)

Resistance (R)

• The resistance to flow of electricity• Measured in OHMS (Ω)

Current (I)

• The rate of flow of electricity in a circuit• Measured in AMPHERES (A)