Question

the principal of which the working of an electric bell depends

Answer 1

Answer:

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Explanation:

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Answer 2

Answer:

An electric bell is a device in which to and fro movement of a smaller hammer on a gong produces the sound of a bell. It works on the principle of magnetic effect of current, i.e. electromagnetism. It is an important application of an electromagnet which is used in offices, houses, schools, alarm equipment etc.

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