Magnetic Substances A magnet is an object that can attract other objects containing iron, cobalt,...

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Transcript of Magnetic Substances A magnet is an object that can attract other objects containing iron, cobalt,...

Page 1: Magnetic Substances A magnet is an object that can attract other objects containing iron, cobalt, or nickel. Magnetism describes all the phenomena.
Page 2: Magnetic Substances A magnet is an object that can attract other objects containing iron, cobalt, or nickel. Magnetism describes all the phenomena.

Magnetic Substances A magnet is an object that can attract other

objects containing iron, cobalt, or nickel. Magnetism describes all the phenomena

caused by magnets

Has two opposite poles - North and South

Similar poles repel & opposite poles attract

The magnetic field can be mapped

Page 3: Magnetic Substances A magnet is an object that can attract other objects containing iron, cobalt, or nickel. Magnetism describes all the phenomena.

Ferromagnetic Substances Not a magnet but something that can

become magnetized by hitting, heating, or touching it with a magnet OR by adding an electrical charge (electromagnet)

Is attracted by a magnet

Must contain one of the following: iron, nickel or cobalt

The magnetism can be turned on and off.

Page 4: Magnetic Substances A magnet is an object that can attract other objects containing iron, cobalt, or nickel. Magnetism describes all the phenomena.

Non-magnetic Substance Cannot be magnetized

Glass, plastic, rubber or wood

Work well as insulators for electrical wires

Page 5: Magnetic Substances A magnet is an object that can attract other objects containing iron, cobalt, or nickel. Magnetism describes all the phenomena.

Mapping Magnetic Fields Rules:

The magnetic field lines can never crossAlways flow from North to SouthThe closer the lines, the stronger the

attraction

Page 6: Magnetic Substances A magnet is an object that can attract other objects containing iron, cobalt, or nickel. Magnetism describes all the phenomena.

Magnets

Shape – shown by lines of force which can be straight, curved, or circular

Direction – shown by arrowheads. The direction is ALWAYS from North to South

Strength – shown by how close the lines are to each other. Closer the lines, the stronger the magnetic field

Page 7: Magnetic Substances A magnet is an object that can attract other objects containing iron, cobalt, or nickel. Magnetism describes all the phenomena.
Page 8: Magnetic Substances A magnet is an object that can attract other objects containing iron, cobalt, or nickel. Magnetism describes all the phenomena.
Page 9: Magnetic Substances A magnet is an object that can attract other objects containing iron, cobalt, or nickel. Magnetism describes all the phenomena.

Compass

The needle of the compass is magneticRed (or any color) tip of the needle is

considered North and will always be attracted towards its opposite the South

Page 10: Magnetic Substances A magnet is an object that can attract other objects containing iron, cobalt, or nickel. Magnetism describes all the phenomena.
Page 11: Magnetic Substances A magnet is an object that can attract other objects containing iron, cobalt, or nickel. Magnetism describes all the phenomena.

Magnetism

Magnetism describes all the phenemona caused by magnets

Magnetic Field is the area of space in which the magnetic force of a magnet can act on another magnet

Electromagnetism describes all the phenomena resulting from the interaction between electricity and magnetism

Page 12: Magnetic Substances A magnet is an object that can attract other objects containing iron, cobalt, or nickel. Magnetism describes all the phenomena.

Magnetic Live Wire Field

Right hand rule can determine which direction the magnetic field lines are moving (fingers)

What direction the

conventional current is

moving (thumb)


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Magnetism · Magnetism

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