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

9th Standard

    Reg.No. :
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Science

Time : 00:30:00 Hrs
Total Marks : 15
    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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