Electronics Flashcards

(39 cards)

0
Q

Current

A

The flow of electrons

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1
Q

Circuit

A

Pathway through which electric current flows

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2
Q

Voltage

A

The pressure/push of electricity

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3
Q

Parallel circuits

A

2 or more pathways, lights brighter, each component has its own pathway to battery

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4
Q

Series circuits

A

Shared pathway, light is dim because if shared voltage throughout components

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5
Q

Short circuit

A

Pathway cutting off components

Bypasses your intended pathway b/c there is no resistance in the way; shortcut

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6
Q

Resistor

A

Component that slows down flow of electrons

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7
Q

How do different size resistors affect brightness of bulb

A

Literal size doesn’t matter

‘Big’ ‘small’ refers to amount of resistance, more meaning less resistance, brighter lights

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8
Q

Resistance

A

Opposition to the flow of electrons in a circuit

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9
Q

Decode a resistor

A

Be brave Roy G Biv growl willfully

Blk/br/r/o/y/g/b/I/v/gry/w

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10
Q

Voltage drop

A

Is the voltage used at a component

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11
Q

Anode

A

Negative terminal

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12
Q

Cathode

A

Positive terminal

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13
Q

What chemical reaction creates different charges required to create flow of electrons?

A

Chemical reaction between electrolyte(acid) zinc anode and copper cathode

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14
Q

Alternating current

A

Comes from generators such as electrical outlets

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15
Q

DC current

A

Produced in batteries

16
Q

Electric motor

A

Attracting and repelling forces create rotational movement

17
Q

First truth of circuits

A

The voltage of the battery is equal to the sum of the voltage at the components

18
Q

2nd truth of circuits

A

Greater the resistance at a component, greater the voltage drop of the components in the circuit

19
Q

Relationship between voltage of power source and voltage drops at components in the circuit

A

The sum of the voltage drop will equal the total voltage from the power source

20
Q

Relationship between resistance of the component and voltage drop of the components in a circuit

21
Q

What happens when batteries are in parallel

A

Only one of the batteries provides voltage for components

22
Q

What happens when batteries are in series?

A

The voltage of the components will be the sum of the batteries combined

23
Q

3rd truth of circuits

24
Where can current electricity only exist?
Within a conductor
25
What are cells?
Electromechanical devices that convert chemical new fry into electrical energy within a battery
26
Parts if a battery
Copper cathode-positive terminal/electrode | Zinc anode-negative terminal/electrode
27
What is the movement of electrical charge balanced by?
By the movement if ions
28
What is a battery?
Transportable device which stores chemical energy and converts it to electrical energy when needed Partly by separating negative and positive charges
29
What part of the battery is the electrolyte?
Conductor of electricity
30
What causes flow of electrons from a battery?
Cells-electromechanical devices that concerts chemical energy to electrical energy
31
How do LED lights produce light?
By flowing electricity through different semi conductors
32
Direct current flows in...
One direction
33
Alternating current flows...?
Back and forth
34
What is a potentiometer?
Resistor that changes it's amount of resistance
35
What needs to be included within every circuit with an LED?
A resistor b/c otherwise it would take too much voltage and blow itself out
36
What does a capacitor do within a circuit?
Hold free electrons and pushes them into a conductive material when needed
37
What other component does a capacitor act like?
Rechargarable battery
38
What are the 2 main functions of a transistor?
Amplifying voltage | Switching on and off voltage