Reading...
Play button
Play button
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;
30 Cards in this Set
- Front
- Back
|
ammeter
|
An instrument that's used to measure electric current.
|
|
|
ampere
|
The basic unit of electric current in the metric sys; abrreviated A. one A= movement of one coulomb of charge per second
|
|
|
battery
|
A series of dry cells
|
|
|
cell
|
A devide that uses either a chemica charge to product electric energy or uses electric energy to make a chemical charge
|
|
|
charged
|
A word used to describe an object with more of one kind of elec. charge than other.
|
|
|
closed circuit
|
a continuous connection of conductors from one end of an electrical source to the other.
|
|
|
conductor
|
A substance through which electric charges can move easily
|
|
|
coulomb
|
a unit of electric charge equal to 6.25x10 to the 18th charges.
|
|
|
current
|
a movement of electric charges; usu. due to moving electrons
|
|
|
electricty
|
energy in the form of electrons that can move along a conductor, that can be changed into heat, light, mechanical or electrical charge
|
|
|
electroscope
|
a device used for detecting electrical charge.
|
|
|
filament
|
the small, fine wire inside a lightbulb
|
|
|
ground
|
an uncharged body that contains a large resevoir of electrons
|
|
|
induction
|
the process of charging an object by bringing it near a charged object
|
|
|
kilowatt-hour
|
=1000 kWh
|
|
|
negative terminal
|
the pt. f a dry cell or battery (having an excess of electrons)from which electrons leave
|
|
|
neutral
|
an object that has egual numbers of positive and negative charges
|
|
|
ohm
|
the SI unit of resis
|
|
|
open circuit
|
an incomp circ. due to break in continuous connection o conductors from one end of elec. source to other
|
|
|
parallel circuit
|
a circuit having two or more paths through which elec. can flow
|
|
|
positive terminal
|
the pt. of a dry cell or battery toward which electrons move
|
|
|
resistance
|
the measure of how hard it is for an elec. charge to move through a conductor
|
|
|
series circuit
|
an elec. circuit that contains a single path with no branches, so that the same current passes through all the conductors in the circuit
|
|
|
short circuit
|
a dangerous cond that results when the pt. of an elec. circuit with the most resis is bypassed
|
|
|
static charge
|
a positive or negative charge thats not moving
|
|
|
volt
|
the SI unit of voltage: V
|
|
|
voltage
|
the amount of energy supplier per unit of elec. charge by a cell or battery ("push" on ea. electron)
|
|
|
voltage drop
|
tge amount of energy removed per unit of elec. energy by passing through a conductor (or resis)
|
|
|
voltmeter
|
a device that measures voltage drop
|
|
|
watt
|
the basic unit of elec. power in the metric sys: abbreviated W
|
