Elementary principle of bell working
Suitable for grades 3-6
key word：Digital inquiry experiment system
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principle
When energized , the electromagnet has a current passing through it, which generates magnetism, attracts the elastic piece under the small hammer, makes the small hammer hit the electric bell and makes a sound, and at the same time the circuit is disconnected, the electromagnet loses its magnetism, and the small hammer is bounced back. Close and repeat, and the electric bell will make a continuous beating sound.
Purpose
Understand the basic principles of how electric bells work.
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