why electromagnet is used in bell
devil61:
so that it could be demagnitised easily fo the metallic arm to detach it fom the gong
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the most widely used form is the interrupter bell, which produces a continuous sound when current is applied. this cycle repeats rapidly many times per second, resulting in a continuous ringing. in other words when the switch is pressed on current flows through the electromagnet
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The electromagnet attracts A An electric bell contains a make and break' switch, which the iron armature. keeps the bell ringing. it breaks the circuit, so a current no longer flows. The coil and core are no longer magnetic and the springy metal strip returns to its original position, and the bell rings once.
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