Elec. Circuits: Circuit Components Flashcards

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1
Q

Cell

A

Provides circuit with a source of potential difference (energy)

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2
Q

Battery

A

2 or more cells

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3
Q

Switch

A

Turns circuit on(closed), or off(open)

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4
Q

Filament Lamp

A

Emits Light(Non Ohmic)
-As I^ , R^
Temperature of filament ^, metal ions scatter electrons more,
resistance increases

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5
Q

Fixed Resistor

A

(Ohmic)
Limits flow of current
-Fixed resistance

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6
Q

Variable Resistor

A

Resistor with a slider
-Changes resistance
(E.g. Volume controls)

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7
Q

Thermistor

A

(Non-Ohmic)
Temp ^, Resistance v

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8
Q

LDR

A

(Non Ohmic)
Light ^, Resistance v

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9
Q

Diode

A

Allows current to flow in only one direction
After a small forward voltage resistance drops quickly
-Reverse Direction resistance is very high

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10
Q

LED

A

Diode that emits light when current passes
Used for displays

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11
Q

Ammeter

A

Measures Current
Connected in series

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12
Q

Voltmeter

A

Measures potential diff. of a component
Connected in parallel with the component

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