Slide 2UNIT FIVE: Electricity and Magnetism Chapter 16 Electricity Chapter 17 Magnetism
Slide 4Chapter Seventeen: Magnetism 17.1 Properties of Magnets 17.2 Electromagnets 17.3 Electric Motors and Generators 17.4 Generating Electricity
Slide 5Chapter 17.2 Learning Goals Define electromagnet. Fabricate a basic electromagnet. Look at changeless magnets and electromagnets.
Slide 6Key Question: How are power and attraction related ? Examination 17B Electromagnets
Slide 717.2 Electomagnets Electromagnets are magnets that are made when there is electric current streaming in a wire. The least difficult electromagnet utilizes a curl of wire wrapped around some iron.
Slide 817.2 Right hand run To locate the north post of an electromagnet, utilize the correct hand manage . At the point when the fingers of your correct hand twist toward the wire, your thumb indicates the magnet's north shaft.
Slide 917.2 Electromagnets in Toasters By changing the measure of current, you can undoubtedly change the quality of an electromagnet or even kill its attraction on and. A toaster plate is pulled around an electromagnet while bread is toasting.
Slide 1017.2 Doorbells A doorbell contains an electromagnet. At the point when the catch of the chime is pushed, it sends current through the electromagnet.
Slide 1117.2 Building an electromagnet You can without much of a stretch form an electromagnet from wire and a bit of iron, for example, a nail. Wrap the wire in many pivots the nail and interface a battery.
Slide 1217.2 Building an electromagnet There are two approaches to expand the current in a basic electromagnet: Apply more voltage by including a moment battery. Include more turns of wire around the nail. Why do these two systems work?
Slide 1317.2 Similarities in lasting and electromagnets The charged electrons in particles act like little circles of current. Electric current through circles of wire makes an electromagnet. Nuclear scale electric streams make a lasting magnet.
Slide 1417.2 Magnetic materials Atoms act like modest magnets. Lasting magnets have their iotas adjusted, making the attractive strengths we watch.
Slide 1517.2 Magnetic materials In iron, the molecules are allowed to turn and effortlessly adjust their individual north and south posts.
Slide 1617.2 Nonmagnetic materials The iotas in non-attractive materials, similar to plastic, are not allowed to move or change their attractive introduction.
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