EARTH SCIENCE
MAGNETISM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A battery is placed next to the iron core.
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Iron filings are sprinkled around the iron core.
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An electric current is being sent through a wire
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The iron core was placed next to an existing magnet.
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Detailed explanation-1: -An electromagnet is a type of magnet in which the magnetic field is produced by an electric current. Electromagnets usually consist of wire wound into a coil. A current through the wire creates a magnetic field which is concentrated in the hole in the center of the coil.
Detailed explanation-2: -Electromagnets are able to produce a magnetic field by leveraging the natural properties of electricity as it moves. When electricity moves, it creates a magnetic field. These effects can be amplified by using a long wire or piece of conductive material and wrapping it around a metal base, such as a piece of iron.
Detailed explanation-3: -Magnetic fields can be used to make electricity Moving magnetic fields pull and push electrons. Metals such as copper and aluminum have electrons that are loosely held. Moving a magnet around a coil of wire, or moving a coil of wire around a magnet, pushes the electrons in the wire and creates an electrical current.
Detailed explanation-4: -An electro magnet is a temporary magnet made by winding wire around an iron core. When current flows in the coil the iron becomes a magnet, and when the current is turned off it looses it’s magnetic properties.