EARTH SCIENCE
MAGNETISM
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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an electric current
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a turbine and nail
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a nail, a wire, and a battery
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a compass and a battery
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Detailed explanation-1: -To create a simple electromagnet, you’ll need a source of electricity, a conductor, and metal. Wrap insulated copper wire tightly around an iron screw or nail before connecting the wire to a battery, and watch as your new electromagnet picks up small metal objects.
Detailed explanation-2: -A simple electromagnet consisting of a coil of wire wrapped around an iron core. A core of ferromagnetic material like iron serves to increase the magnetic field created. The strength of magnetic field generated is proportional to the amount of current through the winding.
Detailed explanation-3: -You need a wire running from one battery terminal to the end of the wire around the nail. Then you need another wire running from the opposite end of the nail’s wire to the other battery terminal. All connections must be secure. Once your circuit is complete, you have an electromagnet!
Detailed explanation-4: -5.3 Electromagnets. Electromagnets consist of coils, usually copper, wrapped tightly around a laminated core of ferromagnetic material (soft iron, steel, cobalt).
Detailed explanation-5: -Electromagnets create a magnetic field through the application of electricity. When you introduce the current, either from a battery or another source of electricity, it flows through the wire. This creates a magnetic field around the coiled wire, magnetizing the metal as if it were a permanent magnet.