Chapter 12 Review Flashcards
1
Q
- A complete electrical current is ____ that conducts electricity and provides a return path for the current .?
A
Closed loop
2
Q
- Pure water is a _________
A
Poor conductor
3
Q
- Insulators are also known as ______
A
NonConductor
4
Q
- Rubber ,silk, ____ glass, and cement are all good insulators
A
Wood
5
Q
- A substance that does not easily transmit electricity is called ____
A
Insulator
6
Q
- The flow of electricity in complete electric circuit is called .?
A
Electric current
7
Q
- Any substance that easily allows the flow of electricity with little resistance is known as ____.?
A
Conductor
8
Q
- Electricity is a_______
A
Form of energy
9
Q
- The movement of particles around an atom that creates pure energy is called _____ .?
A
Electricity
10
Q
- The path of an electric current form the generating source through conductors and back to it’s original source is called ______ electrical circuit .?
A
Complete
11
Q
- A cellphone uses ______ current .?
A
Direct
12
Q
- Rapid and interrupted current , flowing first in one direction and then in the opposite direction is commonly known as ______ current .?
A
Alternating
13
Q
- Paraffin heaters use ______ current .?
A
Alternating
14
Q
- If you wanted to convert AC current to DC current you would need to use ______ .?
A
A recifier
15
Q
- The unit that measures the pressure or force that pushes the flow of electrons forward through a complete electric circuit is called .?
A
Volt
16
Q
- The unit that measures the number of electrons that flow through a complete electric circuit is called .?
A
Ampere
17
Q
- A measurement of how much electricity is being used in one second is called .?
A
Watt
18
Q
- Constant even flowing current that travels in one direction only is commonly known as ______ current .?
A
Direct
19
Q
- What does a light cured nail enhancement use to harden .?
A
UltraViolet
20
Q
- Current will not flow through a conductor unless .?
A
The volts are stronger than the ohms
21
Q
- The electricity in your house is measured in .?
A
Kilowatt per hour
22
Q
- A 75 watt light bulb uses 75 watts of electricity .?
A
Per second
23
Q
- The current for facial and scalp treatments is measured in .?
A
Milliamperes
24
Q
- A unit that measures the resistance in an electric circuit is called .?
A
Ohm
25
25. Normal electric wall sockets that power a parrafin heater are ____ volts .?
110
26
26. If you needed to operate a heavey-duty appliance , such as clothes dryer , you would typically need an outlet with a minimum of _____ Volts. ?
220
27
27. A higher amp rating indicates .?
Greater number of electrons and stronger current .
28
28. Which of the following certifies the safety of electrical appliances .?
Underwriter’s Laboratory
29
29. A _____ is a single use safety device designed to provide protection from an electrical overload .?
A fuse
30
30. Strong heat curing monomers in a warm place can result in discoloration and_____ .?
Prematurely hardening
31
31. To reestablish the circuit when a fuse blows , first ______ .?
Disconnect all appliances
32
32. GFCI stands for ______ .?
Ground fault circuit interrupter
33
33. Which connection on an electric plug supples current to the circuit .?
Love connection
34
34. A careless electrical connection and overloaded circuits can result in an electrical shock , a burn , or _____.?
A serious fire
35
35. A circuit breaker will ______ when the circuit overloads .?
Automatically shuts off
36
36. Uv radiation has a shorter wavelength , more _____ and does not penetrate as deeply as visible light .?
Energy
37
37. Car batteries are ____ volts .?
12
38
38. Avoid contact with ____ and metal surfaces when using electrical appliances .?
Water
39
39. Electricity is a flow of _____
Electrons
40
40. A typically flashlight runs on _______.?
Direct current
41
41. All electrical appliances used should be _____ certified .?
UL
42
42. If an electrical plug does not fit into an outlet , you should______ .?
43
43 . It is recommended that you use how many plugs per outlet .?
One
44
44. Most ____ are good conductors .?
Metals
45
45 . What is the main purpose of the prong and three prong plug .?
Provides an additional ground
