Grade 2 · Unit 5: Electricity

Motors and buzzers

Circuits can make things spin and beep.

Motors and buzzers

Circuit components

Each part of a circuit is a component. Bulbs make light. Other components do other jobs.

You can build circuits with bulbs, buzzers and motors in the Circuit Builder lab.

Motors

A motor spins when it is in a circuit. Motors turn fans, toy cars and washing machines. Easy-bikes and auto-rickshaws have big motors.

When electricity flows through the coils, the middle of the motor spins.

Buzzers

A buzzer makes a sound. Doorbells, alarm clocks and microwave ovens have buzzers.

A buzzer or bell turns electricity into sound.

Light, sound, movement

A bulb changes electricity into light. A buzzer changes it into sound. A motor changes it into movement.

The button is a switch. Let go and the sound stops.

What I learnt