Electricity Flashcards
What is the amount of potential energy stored in electrons?
Voltage
What is the measure of the opposition to the flow of electrons?
Resistance
What is the force created when like charges repel and opposite charges attract?
Electrostatic force
What is a completed path of wires, that electrons flow through?
Circuit
What is the amount of work to be done in a certain amount of time?
Power
What is a circuit that is closed with good continuity throughout?
Closed
Be able to complete a chart for the following - quantity, symbol, unit of measure for the following Current Voltage Resistance Power
Current I Amp/ampere
Voltage V Volts
Resistance R Ohms
Power W Watts
What is the “pressure” that pushes electrons through a conductor?
voltage
What is the type of current when the electrons all move in the same direction?
Direct Current
What is the term for when material has an excess or lack of electrons?
Static Electricity
What is the term for the flow of electricity through a conductor?
Current
What is the material that does not allow electrons to flow easily?
Insulator
What is the part of the battery that absorbs electrons through a chemical reaction?
Cathode
What is the term for the material that will allow the electrons to move through it easily?
Conductor
What is the term for the measure of electrical current - number of electrons in a period of time?
Ampere
What is the term for the type of current created when electrons move in a back and forth pattern?
Alternating current
What is the term for the ability to move or to do work?
Energy
What is the term for the thing that will open or close a circuit?
Switch
What is the term for the safety device that is a bimetallic strip that will cause a circuit to open when too much electricity moves through the circuit?
Circuit Breaker
What is the part of a battery that releases electrons by a chemical reaction?
Anode
What is the term for the thing that converts AC current to DC current?
Diode
What does the resistance of material depend on?
Material
Length
Cross Section (size of the wire)
How long will a battery provide electric power?
Until the electrons have all left the anode
What kind of circuits are dangerous in high voltage systems because they release a lot of heat?
Short Circuits
What is the term for the pump that moves electrons through a wire?
Battery
What can electrons do as they move through a wire?
WORK
What is caused when you rub a piece of cloth and fax together?
A build up of electrons - which causes energy to be stored
What is the force that pushes electrons through a wire?
Electrostatic
What is the standard voltage for AC current in the US?
120 v
Be able to complete the following:
Force - - Gravity - - ?????
How moved - - Water pressure (PSI) - - ?????
Thru - - Pipes - - ?????
What moves - - Water molecules - - ?????
Force - - Gravity - - ELECTROSTATIC
How moved - - Water pressure (PSI) - - WOLTAGE
Thru - - Pipes - - WIRES
What moves - - Water molecules - - ELECTRONS
