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9th Standard English Medium Science Subject Magnetism and Electromagnetism Book Back 3 Mark Questions with Solution Part - I updated Book back Questions Question Bank Software May-13 , 2022

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9th Standard English Medium Science Subject Magnetism and Electromagnetism Book Back 3 Mark Questions with Solution Part - I updated Book back Questions

    5 x 3 = 15

  1. State an important advantage of ac over dc.

  2. A portable radio has a built in transformer so that if can work from the mains instead of batteries. Is this a step up or step down transformer?

  3. State Faraday’s laws of electromagnetic induction.

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