electrical theory quizlet vocab

Solenoid

A coil of wire that produces a magnetic field when carrying an electric current.

power

the rate at which energy is expended over time

Static Charge

A buildup of charge on an object. An electric charge that tends to stay on the surface of an object, rather than flowing away quickly. ​

Static electricity

A buildup of charges on an object.

series current

A circuit in which the electrons flow along a single path.

Source

A device delivering energy into a system. Examples of typical electrical sources include generators, photovoltaic cells, thermopiles, and primary-cell batteries.

Transformer

A device that increases or decreases the voltage of an alternating current.

Current

A flow of electric charge.

Turbine

A machine for producing power in which a wheel or rotor is made to revolve by a fast-moving flow of water, steam, gas, or air.

generator

A machine that converts mechanical energy into electrical energy

conductor

A material that allows heat and electricity to pass through it.

alternating current

Alternating current is an electric current which periodically reverses direction and changes its magnitude continuously with time in contrast to direct current which flows only in one direction. ​

capacitor

An electrical device used to store electrical charge.

electroscope

An instrument used to detect electric charge

law of conservation of energy

Energy cannot be created or destroyed

kirchoff's law

Objects that are good emitters of radiation at a given wavelength are also good absorbers of radiation at that wavelength

electric current-

The continuous flow of electric charges through a material

electromagnetism

The interaction between electricity and magnetism

Amperage

The measurement of Current. Coulombs/second. ​

resistance

The measurement of opposition to the flow of electricity in a component electric circuit consists of an arrangement of interconnected circuit components resulting in a non-repeating loop.A material's opposition to the flow of electric current. Slows the flow of energy through the circuit. Light bulbs, televisions, anything that uses energy, is called a resistor.

electrical theory

V=I*R finds voltage drop across a circuit

ohm's law

V=IR

​ charging by induction

a charging method that charges an object without actually touching the object to any other charged object

loop

a closed path within a circuit

electromagnet

a coil that has a soft iron core and that acts as a magnet when an electric current is in the coil

​ electromagnetic Induction

a current produced because of voltage production (electromotive force) due to a changing magnetic field

load

a device extracting energy from a system

electric motor

a device that converts electrical energy into mechanical energy

galvanometer

a device that uses an electromagnet to measure electric current

electric field

a field of force surrounding a charged particle

Electromagnetic Force

a force associated with charged particles, which has two aspects, electric force and magnetic force

dielectric

a medium or substance that transmits electric force without conduction; an insulator.

Branch

a single circuit element

ground

all other voltage measurements are relative. point assigned to OV

parallel circuit

an electric circuit with multiple paths

direct current-

an electric current that flows in one direction steadily

electric charge-

an electrical property of matter that creates electric and magnetic forces and interactions

voltage

an electromotive force or potential difference expressed in volts.

charge separation

energy is transferred to the reaction center; an excited electron is transferred to an acceptor molecule

magnetic domains

groups of atoms with aligned magnetic poles

magnetic field

groups of atoms with aligned magnetic poles

LED lighting

light emitting diode lighting; a semiconductor device that converts electricity into light; noted for its high energy savings and long-lasting durability.

capacitance

the ability of a conductor to store energy in the form of electrically separated charges

charging by contact (conduction)

the process of transferring charge by touching or rubbing

Electrical Power

the rate at which electrical energy is converted to another form of energy

grounding

the transfer of excess charge through a conductor to Earth

insulator

the transfer of excess charge through a conductor to Earth

magnetic poles

two ends of a magnet where the magnetic forces are strongest

node

two ends of a magnet where the magnetic forces are strongest

Coulombs (c)

unit of charge