| Terms |
Definitions |
|
A(n) __ measures electrical current.
|
amp
|
|
Fixed resistors have relatively ___ resistance levels like _____.
|
high; hundreds, thousands, millions of ohms
|
|
A __ is a device, such as a light or an appliance, that we want to run with electricy.
|
load
|
|
See k or kilo- and think:
|
thousand
|
|
Electromotive force is ___
|
a force that tends to move electricity.
|
|
What is nichrome?
|
a wire that is a poor conductor, used in wirewound resistors.
|
|
Another way of describing electromotive force is the term ____.
|
potential.
|
|
The magnitude of electrical resistance in a circuit is measured in ___.
|
ohms
|
|
Using the electric series, the materials listed on the positive end of the series will receive a __ charge when rubbed with a material further toward the negative end of the series.
|
positive
|
|
See m or milli- and think:
|
thousandth (move decimal to the right)
|
|
A __ is the device used to turn the electricity flow on and off.
|
switch
|
|
One watt is ___________.
|
the power exerted in a circuit with an EMF of 1 volt and a current of 1 amp.
|
|
See ยต or micro- and think:
|
millionth (move decimal to the right)
|
|
Abbreviations for voltage are V and __.
|
E (for EMF)
|
|
In a(n) _____ circuit, the circuit is complete. The power flows through the entire circuit path.
|
closed
|
|
See n or nano- and think:
|
billionth (move decimal to the right 9)
|
|
A ___ measures potential.
|
volt
|
|
What is the mathematical representation of Ohm's Law?
|
E=I x R
|
|
The amount of electric current flowing through a circuit is called __.
|
amperage.
|
|
An example of a resistor material is:
|
carbon
|
|
Four components of a circuit are:
|
power source, conductors, a load, and a switch
|
|
Amps can be abbreviated with the letters A and __.
|
I (for Intensity)
|
|
See G or giga- and think:
|
billion
|
|
A complete electrical path is a ___
|
circuit
|
|
Resistors are commonly used to ______________.
|
protect curcuits and control the flow of electricty through them
|
|
The opposition that a circuit or substance creates against the flow of electrical current is ___.
|
resistance
|
|
A __ measures the quantity of charge equal to 6.24 x 10^18 electrons.
|
Coulomb
|
|
Examples of ___ are glass, mica, porcelain, paper, plastic, and rubber.
|
insulators
|
|
The strength of electrical potential (or EMF) is measured in units called __.
|
volts.
|
|
What is a Coulomb?
|
One coulomb is the quantity of charge equal to 6.24 x 10^18 electrons.
|
|
The material between one charged body and another is called the ___
|
dielectric.
|
|
What kind of resistors are used in high power circuits like in heaters?
|
Wirewound resistors
|
|
Carbon resistor is also called a
|
fixed resistor.
|
|
In a(n) _____ circuit, the circuit is broken. The power cannot flow through to the load.
|
open
|
|
Static charges can be eliminated by either __ or __.
|
bonding, grounding.
|
|
Wirewound resistors have resistance values of ____ ohms.
|
tens, hundreds or thousands
|
|
See M or mega- and think:
|
million
|
|
Two of the best-known conductors of electricity are
|
silver and copper
|
|
What is 5,500,000 in scientific notation?
|
5.5 x 10^6
|
|
Process by wich an object receaives a static charge by being placed near another charged object (without touching).
|
Induction.
|
|
See p or pico and think:
|
move decimal to the right 12 (trillionth)
|
|
What is an Ohm?
|
One ohm is the resistance which allows a current of one ampere when an electromotive force of one volt is applied to a conductor.
|
