Basic Electricity:

Electrons in motion.
Negatively charged particles
Move from place of negative charge to one of positive charge.

Electrons generally flow through matter.
Occurs most easily in metals.

Conductors: free flow of electrons. Metals
Insulators: very little free flow of electrons. Non-metals.
Semi-conductors: electrons can be made to flow.


RESISTANCE: opposition to current flow.
OHM: unit measuring resistance to flow.  	
	Lower the resistance, the easier the flow.

Electrons measured in groups.  
	COULOMB:  6.24 x 10 to the 18th electrons.

Electrons are measured in motion.
	AMPERE or AMP = One coulomb per second.

ELECTROMOTIVE FORCE  (EMF): 
Flow of electrons from high concentration or potential to low.
  	Polential is measured in VOLTS.

One VOLT = EMF required to push one COULOMB per SECOND through one OHM.

Electricity can perform work when in motion.  
	This work is expressed in Watts.

WATTS: a measure of Power, i.e. Work performed.

FORMULAE:

OHMS LAW.

Intensity = EMF/ Resistance     
I = E/R
	Can be expessed as:
	I=E/R      E = IR     R = E/I 

POWER formula:

Work = Intensity x Force

PIE Law:
	P = IE  Power = Intensity x EMF

or in the units of measure:    

West Virginia Law:
	Watts = Volts x Amps

By combining these, you can derive the characteristics of 
electrical devices in a circuit.

Examples:

500 w. lamp at 100 v.
A=W/V  =  500/100 = 5 amps
R=E/I  =  100/5 = 20 ohms

1000 w. lamp at 100 v

A=W/V  =  1000/100 = 10 amps
R = 100/10 = 10 ohms

CIRCUITS:
Basic principles:
	-The higher the source potential, the higher the flow.
	-Breaking circuit stops flow.
	-The larger the conductor, the easier the flow.
	-The lower the resistance of load, the faster the flow.
	-To much flow breaks the load.
	-When source is drained, flow stops.

Series and parellel circuits

Series: flow through each element sequentially.
Parellel: flow through multiple elements simultaneously.

Resistance in Circuits:
	Series Circuits: total resistance directly proportional
	Parellel Circuits: total resistance inversly proportional