can we use u shaped permanent magnet in making electric bell.why?give reason to support
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The main advantage of a permanent magnet over an electromagnet is that a permanent magnet does not require a continuous supply of electricalenergy to maintain its magnetic field
kalrakiran123p1uzaf:
???plz read the question carefully
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no we can not use a permanent magnet because it has to be magnetic only when the iron bar hits the gong and after that the magnetic effect should be gone so that the iron bar moves back and the procedure continues to make a ring
welcm...n thankeww for the answer
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