Components

This lesson covers:

  1. What each of the components in an electrical circuit does
  2. How to draw each components circuit symbol
Electrical component symbol showing a blue vertical line and a blue vertical line with a short horizontal line on a black background.

This is the symbol for a:

Battery

Cell

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This is the symbol for a:

Battery

Cell

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Diagram showing two different component arrangements labeled A and B.

Which of the following statements is true?

A is an open switch, B is a closed switch

A is a closed switch, B is an open switch

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Symbol for a diode showing a triangle pointing to a line within a circle.

This is the symbol for a:

Diode

Light emitting diode

Ammeter

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Symbol for a capacitor in an electrical circuit diagram.

This is the symbol for a:

Fuse

Thermistor

Variable resistor

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A light emitting diode will:

(Select all that apply)

Only allow current to flow in one direction

Emit light when current flows through it

Measure potential difference

Provide electric power to a circuit

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Which 2 of the following statements about ammeters are true?

(Select all that apply)

They are added to a circuit in series

They measure potential difference

They are added to a circuit in parallel

They measure current

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Which of the following statements about voltmeters are true?

(Select all that apply)

They are added to a circuit in series

They measure current

They measure potential difference

They are added to a circuit in parallel

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Diagram showing the symbol for a diode.

This is the symbol for a:

Variable resistor

Fixed resistor

Thermistor

Light dependent resistor

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Symbol for a capacitor in electrical circuits.

This is the symbol for a:

Diode

Open Switch

Closed switch

Thermistor

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Diagram showing the symbol for a diode.

This is the symbol for a:

Variable resistor

Thermistor

Light dependent resistor

Fixed resistor

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Symbol for a component with a blue rectangular border.

This is the symbol for a:

Variable resistor

Light dependent resistor

Thermistor

Fixed resistor

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A resistor whose resistance decreases when temperature increases is a:

Variable resistor

Fixed resistor

Thermistor

Light dependent resistor (LDR)

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Which type of resistor allows us to easily adjust its resistance?

Light dependent resistor (LDR)

Thermistor

Variable resistor

Fixed resistor

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A resistor which cannot vary the amount of resistance it provides is a:

Thermistor

Variable resistor

Fixed resistor

Light dependent resistor (LDR)

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In which type of resistor does the resistance vary with light intensity?  

Fixed resistor

Thermistor

Variable resistor

Light dependent resistor (LDR)

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The resistance of a thermistor decreases when the temperature _______.

increases

decreases

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