Introduction:
| An electric
bell is among the most common electrical equipments
found in every house or office. It is used as a door
bell, phone ring, fire alarm and can be found in many
different shapes and sizes. An electric bell is a simple
example of how we can use electromagnets to convert
electrical energy to mechanical energy and sound waves.
The same mechanism used to vibrate a hammer in an
electric bell, is used in many other industrial and
household equipments. Two well known examples are
Electric Shavers and Shearing machines. |
 |
These two both work like
a buzzer, but instead of an iron arm, a blade will be vibrated.
In this project you will make a bell or a buzzer to demonstrate
the vibrating motion produced using an electromagnet. You will
also study factors affecting the strength of your electromagnet.
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