How Does A Doorbell Use Electromagnet?
The doorbell uses a electromagnet to accuate the hammer that hits the chimes in the doorbell. You have a transformer hooked in a series circuit with the doorbell button and the chime. When the button is pressed it energizes the electromagnet in the doorbell and accuates the hammer that hits the chime and you hear the result when the chime vibrates from being hit by the hammer.