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Electricity Flashcards

(66 cards)

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1
Q

What is force?

A

Cause of motion or change

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2
Q

What is an insulator?

A

Poor conductor of electricity

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3
Q

What is an electric discharge?

A

A release of electric energy

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4
Q

What is a circuit?

A

Complete path of electric current

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5
Q

What is a battery?

A
  • a group of cells connected to furnish the current
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6
Q

What is a voltmeter and what are volts?

A
  • instrument that measures volts

- volts= potential difference

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7
Q

What is energy?

A

Usable power

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8
Q

What is rehostat?

A
  • current resistor
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9
Q

What is piezo-electric?

A

-electricity due to pressure

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10
Q

What is a dry and secondary cell? Check!!!

A
  • dry cell= electrochemical cells that convert stored chemical energy
  • secondary cell= electric cell that can be recharged
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11
Q

What is an alternative current?

A

-electric current that reverses what direction it flows

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12
Q

What is a service panel? Check!!!!!

A

-distribution centre divides electric power into subsidiary circuits

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13
Q

What is a short circuit?

A
  • low points of resistence in points of the circuit
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14
Q

What is cogeneration?

A
  • using wasted heat to create electricity in an idustrial proccess
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15
Q

What is electrical force? Check!!!

A

Attraction or repulsive interaction between charges

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16
Q

What is a conductor?

A
  • material that allows current to flow freely
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17
Q

What is neutralized mean?

A

-making something neutral

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18
Q

What is a source and a switch?

A
  • source= carries charges across current flow

- switch= making or breaking connections in an electric circuit

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19
Q

What is a galvanometer and amps? Check both!!

A

Instrument that measures electric current, and base unit of electric current

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20
Q

What is resistance?

A
  • resisting something
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21
Q

What is a thermistor and thermocouple?

A

Resistor used from a semiconductor whos resistance relys on temp and a thermocouple measures the temp of the potential differnec between junction of wires

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22
Q

What is a photovoltaic cell? Check!!

A

Electric device that uses light to create electricity by this effect the photovoltaic effect

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23
Q

What is an electrode?

A
  • conductor where electricity enters or leaves a subject
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24
Q

Batteries?

A

Group of batteries

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25
What is direct current?
- current flowing in one direction
26
What is a fuse? Check!!
Electric safety device that provides over current protection
27
What is GFCI? Check!!!
Quickly breaks a circuit when there is an imbalance between passing current
28
What is nuclear fission? Check!!!
A reaction where the nucleus splits releasing energy
29
What is static electricity?
Electricity that consists of motionless charges
30
What is a semiconductor?
- something between a conductor and insulator
31
What is grounding? Check!!
Connecting electric power systems to the ground for safety reasons
32
What is a load? Check!!!
Component that consumes electricity
33
Resistor?
- something that resistes something
34
What is an ammeter and ohms?
-measures electric current and unit of electric resistance
35
What is a multimeter, varistor, and thermopile?
Instrument that measures properties of circuit, resistor whose resistance depends on voltage, A bunch of thermomcouples to multiply effect
36
Electrochemical cell check!!!!, and an electrolyte?
- device capable of generating electric energy from chemical reactions or using electric energy to cause chemical reactions - substance when fused or dissolved becomes a ionic conductor
37
What is a generator?
- turns mechanical energy= electric energy
38
What is a transformer?
Converts into variations of current and voltage in a secondary circuit
39
What is a branch circuit? Check!!!
Part i | Electric circuit extending beyond circuit breakers or fuse
40
Non- renewable?
- unable to be replaced or refurnished
41
Nuclear fusion? Check!!
Atomic nuclei combine to create a heavier nucleus and releases energy
42
What is charge separation? Check!!!
Positive and negative charges are not together but separated in a molecule
43
What is a superconductor?
A substance with no electric resistance
44
What are ionizers? Check!!!
High voltage to give charge to particles that move through ionizer or to molecules
45
What is a lamp?
- something containing a light bulb to create light
46
Ohmeter?
Instrument to measure resistance in ohms
47
Power?
Supply energy
48
Variable resistor? Check!!!
Resistor where the Resistance value can be adjusted
49
What is piezo effect? Check!!!!!
- ability for something to generate electric charge when applied mechanical stress
50
What is a wet cell? Check!!!!
Original types of rechargeable battery uses liquid
51
Primary cell?
Cell that converts chemical energy to electric energy
52
Electromagnet?
-core of magnetic material in which current passes through to magnetize it
53
What is a circuit breaker?
Switch that turns off overloaded circuit
54
Binary code? Check!!!
Series off electric pulses to represent number and characters and operations
55
What is renewable resource?check!!!
-energy renewed from ocean wind solar hydropower etc
56
Thermal pollution?
discharge of heated water to natural water at a harmful temp
57
How to positive,negative and neutral charges interact?
+ plus neutral= attract - plus neutral= attract + plus -= attract The rest repel
58
What are the 3 laws of charges?
Unlike charges attract Like charges repel Charged objects attract uncharged objects
59
How to ground something why is it important?
Connect to earth with grounding wire protects things and people from the danger of high voltage
60
Drawing circuit?
Create square with angles, ,are sure conductor lines do not cross add the symbols with equal size
61
units for volts, amps, ohms, power, energy
``` volts= V amps= A Ohms=lulu lemon sign power= watt energy= joules ```
62
What is ohms law and how do you apply it? Check!!
finding the resistance of something from its current and voltage resistance= voltage divided by current
63
how are house wired? What are the safety mechanisms? ASK?
-two hot wires, one neutral circuit breaker= cuts power fuse= metallic conductor that heats up when there is too much current ground wire= to keep charge neutral
64
What happens when you trip a breaker?
turns off and must be manually turned on in order for electricity to flow through again
65
Common safety rules in a household? ASK?
- do not plug in too many things - never work on or clean appliances that are still plugged in - replace worn electric cords - never use appliances too close to sink or bath tub
66
Check this dexk before pats
Ss

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