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L1 -Circuit symbols

Kapow!

Created on December 12, 2023

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www.kapowprimary.com

Circuit symbols

©2023 Kapow Primary
www.kapowprimary.com
©2022 Kapow Primary

Checking circuit symbols

Modelling a circuit

Electrical circuit symbols

Using symbols

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©2022 Kapow Primary

Contents

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©2022 Kapow Primary

Click on the image to reveal the questions.

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©2023 Kapow Primary
www.kapowprimary.com
©2022 Kapow Primary

Using symbols

trmoo

zzuerb

ulbb

edsclo tiswhc

pnoe tiswhc

riew

tbayter

lcle

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©2023 Kapow Primary

Click on the anagram to reveal information about the component and its symbol.

www.kapowprimary.com
©2022 Kapow Primary

Electrical circuit symbols

Motor: moves.

Buzzer: makes a noise.

Bulb: lights up.

Closed switch: completes the circuit.

Open switch: breaks the circuit.

Wire: connects components in an electrical circuit.

Battery: more than one cell as a power source.

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©2023 Kapow Primary

Cell: a single portable power source.

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©2022 Kapow Primary

Checking circuit symbols

Click on the structures to see how they model a circuit.

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A boiler with a pump heats and pushes water through the pipes.

A radiator transfers heat from the pipes to the room.

Water flows in the pipes.

Pipes.

©2023 Kapow Primary
www.kapowprimary.com
©2022 Kapow Primary

Modelling a circuit

A boiler with a pump heats and pushes water through the pipes.

  • The boiler is like the battery.
  • It pushes water like the battery pushes electrical charge.
  • Energy is transferred here.

Why do people use symbols?

A radiator transfers heat from the pipes to the room.

  • The radiator is like the bulb or other components in the circuit.
  • Water flows through the radiator just like electrical charge flows through the bulb.
  • Energy is transferred here so heat is given out in the room just like light is given out in the bulb.

Cell

A single, portable power source.

Wire

Joins components in an electrical circuit.

Battery

More than one cell used in a circuit.

Closed switch

Completes the circuit.

  • How long would it take an electrician to draw proper pictures of the components?
  • What if electricians chose their own symbols?
  • What problems may happen if electricians shared diagrams across different countries?

Open switch

Breaks the circuit.

Water flows in the pipes.

  • The flow of water is like the flow of electrical charge.
  • Water is contained within the pipes, just like electrical charge is contained within the wires.

Bulb

Lights up in a complete circuit.

Pipes.

  • The pipes are like the wires of the circuit.
  • They do not move but allow something to flow inside (water inside the pipes and electrical charge inside the wires).

Motor

Causes movement in a complete circuit.

Buzzer

Makes a sound in a complete circuit.