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Electronics > Electronics > Flashcards

Electronics Flashcards

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

A

?

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

A

Hard

24
Q

Where can current electricity only exist?

A

Within a conductor

25
Q

What are cells?

A

Electromechanical devices that convert chemical new fry into electrical energy within a battery

26
Q

Parts if a battery

A

Copper cathode-positive terminal/electrode

Zinc anode-negative terminal/electrode

27
Q

What is the movement of electrical charge balanced by?

A

By the movement if ions

28
Q

What is a battery?

A

Transportable device which stores chemical energy and converts it to electrical energy when needed
Partly by separating negative and positive charges

29
Q

What part of the battery is the electrolyte?

A

Conductor of electricity

30
Q

What causes flow of electrons from a battery?

A

Cells-electromechanical devices that concerts chemical energy to electrical energy

31
Q

How do LED lights produce light?

A

By flowing electricity through different semi conductors

32
Q

Direct current flows in…

A

One direction

33
Q

Alternating current flows…?

A

Back and forth

34
Q

What is a potentiometer?

A

Resistor that changes it’s amount of resistance

35
Q

What needs to be included within every circuit with an LED?

A

A resistor b/c otherwise it would take too much voltage and blow itself out

36
Q

What does a capacitor do within a circuit?

A

Hold free electrons and pushes them into a conductive material when needed

37
Q

What other component does a capacitor act like?

A

Rechargarable battery

38
Q

What are the 2 main functions of a transistor?

A

Amplifying voltage

Switching on and off voltage

Electronics (2 decks)

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