Question

Hello friends help me
12) Why is a soft iron used as the core of the Electromagnet in an electric bell?

13) how is the work of an electric bell affected if alternative current be used instead of direct current.

14) name the material used for making the armature of an electric bell. give reason for your answer.
Please help me it's urgent and who ever does this all question I will mark that answer as an brainlist answer

Answer 1

Hello dear your answer is in down

12) when switch is made of an electric bell current flowing through wires cannot produce very strong magnetic field if core is not used. The soft iron core of the Electromagnet make the magnetic field stronger .

13.if an A.C source is used in place of an battery ,Electromagnet will magnetized but polariyat its end will change but attraction of armature does not depends on the polarity of Electromagnet so the bell will string on switching pressing the switch.

14) the armature of an electric bell is made up of soft iron and it can be easily be attracted towards electromagnet .

Hope it helps you a lot

Answer 2

12) When switch is made on of electric bell current flowing through wire can not produce very strong magnetic field if core is not used. The soft iron core of the electromagnetmakes the magnetic field stronger.

13) AC keeps on changing the polarity of the current and direction. While D.C could not be

14) Soft iron because it can be magnetized and dagmagnetized very easily

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