Which of the following method can be used to produce magnetism.
(A) Electric magnet
(B) Magnetic induction
(C) Permanent Bar magnet
(D) All of the above
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Answer:
Three methods of producing magnetic fields are as follows: (a) Magnetic field can be produced by placing a permanent magnet or a horse-shoe magnet at the place, where magnetic field is required. (b) Magnetic field is produced around a current carrying straight conductor or a current carrying coil.
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Answer:
C) permanent bar magnet
Explanation:
Following are the methods of producing magnetic fields: By using a permanent magnet we can produce the magnetic field and it can be visualized by spreading iron fillings on a white paper and keeping a magnet beneath the paper. A current-carrying straight conductor produces the magnetic field
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