CP Word Flashcards
Unit of measure
Ampere
This symbol will be used in the ohm’s’ slaw formula
I
Current compares to the flow of
Gas or liquid in a piping system
Resistance is
Opposition to current flow
Unit of measure
Ohm often seen as the Greek letter
Symbol used in the ohms law formula
R
Resistance compares
Orifice effect or the size restriction of inside pipe diameter
Voltage is
Difference of potential electromotive force ability to do work
Volt is
Unit of measure
The symbol used in Ohm’s law formula for voltage
E or V
Voltage compares to
Pressure in a gas or liquid system
When voltage is held constant, the current and resistance well very inversely. This means that when the current in a circuit goes up the value of resistance decreases
This happens that I simple circuit
E=
I•R
I=
E|R
R=
E/I
Current is
Flow of electrons
Electrons are
Particles that carry a negative charge they also help hold matter together a bit like mortar in a brick wall
Voltage or Potential
Is an electro motive force or a difference in potential expressed and volts
Voltage is the energy that puts charges in
Motion
1,000 volts =
1 kilovolt
1.000 volts=
1000 millivolts
0.100 volts=
100 mV
0.010 volt=
10 mV
0.001 V=
1 mV
0.000001 V=
1 microvolt
EMF is
Electro motive force- any voltage unit
E or e. =
Voltage across a source of electrical energy( e.g. Battery, pipe to soil potential)
V or v =
Voltage across a sink of electrical energy
Current is
The flow of charges along a conducting path and is measured in amperes
Ampere is the common unit of
Current
Current is abbreviated as
Amos, Milliamps, or microamps
Ampere=The common unit of
Current
The electric circuit is the path followed by
An electric current
