• Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off
Reading...
Front

Card Range To Study

through

image

Play button

image

Play button

image

Progress

1/79

Click to flip

Use LEFT and RIGHT arrow keys to navigate between flashcards;

Use UP and DOWN arrow keys to flip the card;

H to show hint;

A reads text to speech;

79 Cards in this Set

  • Front
  • Back
electricity
A form of energy created by the interaction of charged particles, such as electrons and protons
ground
An object that can supply a very large number of electrons or can remove a very large amount of electrons from a charged object, thus neutralizing the objects
Static electricity (static charge)
An electric charge that stays on the surface of an object, rather than flowing away quickly. Usually caused by friction.
Charging by Friction
When two objects made from different materials rub against each other, producing a net static charge on each.
Charging by Induction
The proximity caused by a charged object being close to a neutral object produces a force on the neutral object, causing the neutral object to move (charges through the electric field).
Charging by Contact
Charging a neutral object by contacting it with a charged object.
Laws of electric charges
Like repel Opposite attract Neutral and Charged attract
Electric circuit
A closed path along which electrons that are powered by an energy source can flow
Voltaic cell
A source of energy that generates an electric current by chemical reactions involving two different metals or metal compounds separated by a solution that is a conductor
Dry cell
A cell that contains an electrolyte that is a paste
Wet cell
A cell containing a liquid electrolyte
Solar cells
a cell that converts sunlight into electrical energy
Fuel cells
A cell that generates electricity through the chemical reactions of fuel that is stored outside of the cell
Primary cells
Can be used only once, then discarded.
Secondary cell
Can be recharged many times.
electrodes
Two metal terminals
Electrolyte
A conducting solution/paste
terminal
Location on a cell that must be connected to other components to form a circuit
switches
A control device that can complete or break the circuit to which it is connected,
Open circuit
A circuit that includes/contains a gap or a break in the model
Electric current
The rate of movement of electrical charge (In an electric circuit)
Conventional current
Moving in the same direction as a positive current
load
A resistor/device that transforms electrical energy into heat, motion, sound, or light.
volt
The unit for potential difference equivalent to one joule per coulomb
Ampere (A)
The unit of electric current equivalent to one coulomb per second
Coulomb (c)
The quantity of charge that is equal to the charge of 6.25x1018electrons.
multimeters
Can be used as both voltmeters and ammeter. Different settings determine the different circuits it should be connected to.
Ohm (omega sign)
Unit for resistance, equivalent to one volt per ampere (v/a)
Circuit diagrams
are diagrams using standard symbols to represent the components in an electric circuit and their connections
Series circuit
A circuit in which electrons can flow along a single path. Series connections are the components that connect to the conducting wires.
Parallel circuit
A circuit in which the electrons can flow in multiple paths. Parallel connections are parts of the circuit including more than one pathway
ammeter
Measures the current (in amperes, A) at a specific location in a circuit.Always connected in series.
voltmeter
Measures the potential difference (in volts,V) between two points in a circuit. It measure the electric potential on one side of a load (bulb/resistor) and the electric potential on the other side.
Ohm’s Law (R=V/I)
The ratio of potential difference to current is a constant called resistance
Calculating Ohm’s Law
Calculate resistance: V/I=RCalculate potential difference: V=IR(x)Calculate Current: V/R=I
Non-omic
Not following ohm’s law
Superconductors
Materials through which electric charges can flow with no resistance
Alternating currents
Current in which electrons move back and forth in a circuit
Direct currents (DC)
Is a current in which charged particles travel through a circuit in only one direction
Circuit breakers
safety devices that are placed in series with other circuits which lead to appliances and other outlets
fuse
A safety device found in older buildings and appliances; like a circuit breaker, it’s placed in series with other circuits that lead to appliances and outlets.
transformer
A device that changes potential difference (only work with alternating current)
Lightning rod
A metal sphere or point attached to the highest part of a building and connected to the ground. Reduces the chances of a lightning strike.
Electrostatic precipitator
Removes unwanted dust particles and liquid droplets from a flow of gas
Electrostatic separator
Uses induced charges to separate the particles that have different masses.
Electric field
A property of the space around a charged object, where the effect of its charge can be felt by other objects
electroscope
A device used to detect an electric current using metal leaves
Induced charge separation
The movement of electrons in a substance, caused by the electric field of a nearby charged object.
insulator
A material in which electrons cannot move easily from one atom to another
conductor
A material in which electrons can move easily between atoms
semiconductor
A material in which electrons can move fairly well between atoms
Electrostatic series table
Describes how strongly different materials hold onto their electrons
resistor
A device used in an electric circuit to decrease the current through a component by a specific amount
Electrical resistance
The property of a substance that hinders electric current and converts electrical energy to other form of energy
switches
Control devices that can complete or break the circuit to which it’s connected
Base load
The continuous minimum demand for electrical power
Peak load
The greatest demand for electricity which is met by using hydroelectric power.
Intermediate load
A demand for energy greater than the base load (met by burning coal)
Photovoltaic effect
The generation of a direct current when certain materials are exposed to light
current
The movement of electrical energy.
Potential difference
(voltage) the difference between the electric potential energy per unit of charge at two points in a circuit
Positive (protons)
Any object with fewer electrons than protons has a positive charge.
Negative (electrons)
Any object with more electrons than protons is negatively charged.
lightning
A sudden electrostatic discharge
Distribution panel
A control panel that distribute electricity
Electricity meter
Measures the amount of electricity in a current
Van de Graaff generator
Generator capable of generating very large charges
Radiation dosimeter
A small device that detects and measures exposure to radiation
Factors that affect resistance in wires
Material, temperature, length, thickness.
EnerGuide
A label that gives details about how much energy an appliance uses in one year of normal use
Electrical energy
The energy that is used by an appliance at a given setting determined by multiplying the power rating of an appliance by the length of time it is used

AC source

ammeter

cell

battery

bulb

resistor

switch

voltmeter