People's Education Edition Physics for Grade 8, Volume 2
People's Education Edition Ninth Grade Physics Complete Book
People's Education Edition Physics for Grade 8, Volume 1
Shanghai Science Edition Ninth Grade Physics
Shanghai Science Edition 8th Grade Physics
Lu Jiao Edition Ninth Grade Physics Volume 2
Lu Jiao Edition Ninth Grade Physics Volume 1
Beijing Normal University eighth grade physics volume one
Lu Ke Edition High School Physics Compulsory Course One
Beijing Normal University Ninth Grade Physics Volume 1
Guangdong and Shanghai Edition Ninth Grade Physics Volume 1
People's Education Press High School Physics Compulsory Course II
Beijing Normal University Ninth Grade Physics Volume 2
Lu Jiao Edition Eighth Grade Physics Volume 2
Lu Jiao edition eighth grade physics volume 1
Guangdong and Shanghai Edition Ninth Grade Physics Volume 2
Category | Format | Size |
---|---|---|
Beijing Normal University Ninth Grade Physics Volume 2 | pptx | 6 MB |
Description
"The force of a magnetic field on a current-carrying wire" Magnetic Phenomena PPT courseware
think about it
In Oersted's experiment, we know that the current has a powerful effect on the magnet. On the contrary, what about the powerless effect of the magnet on the current?
1. The effect of magnetic field on current-carrying wires
Observe and think
1. Device
2. Experiment
Step ①: Close the switch
Phenomenon ①: The straight wire moves
Conclusion ①: The magnetic field has a powerful effect on the current-carrying wire.
Step ②: Change the direction of current
Phenomenon ②: The direction of wire movement changes
Conclusion ②: The direction of the force of the magnetic field on the current-carrying wire is related to the direction of the current
Step ③: Change the direction of the magnetic field
Phenomenon ③: The direction of wire movement changes
Conclusion ③: The direction of the force exerted by the magnetic field on the current-carrying wire is related to the direction of the magnetic field.
Experiment summary
1. When the switch is closed, the conductor that was originally stationary in the magnetic field moves. The motion state of the conductor changes, indicating that the magnetic field has a powerful effect on the energized conductor.
2. If the direction of the magnetic field remains unchanged and the direction of the current is changed, the direction of motion of the conductor in the magnetic field will change. This shows that the change in the direction of the current causes the direction of the force on the conductor to change.
3. If the direction of the current remains unchanged and the direction of the magnetic field is changed, the direction of motion of the conductor in the magnetic field will change. This shows that the change in ________ causes the direction of the force on the conductor to change.
4. If the direction of the magnetic field and the direction of the current are changed at the same time, the direction of movement of the conductor in the magnetic field will change _________.
2. Left-hand rule
Stretch out your left hand, put the four fingers together, and make the thumb perpendicular to the four fingers and in the same plane. Let the magnetic induction lines pass through the palm of your hand vertically and make the four fingers point in the direction of the current. At this time, the direction pointed by the thumb is the direction of the current-carrying wire in the magnetic field. The direction of the magnetic field force.
3. Moving coil speakers
1. Composition: three main parts: voice coil, permanent magnet, and cone.
2. Working principle: When current passes through the voice coil, it will be affected by the magnetic field force and move. Since the current passing through the voice coil changes repeatedly when the speaker is working, the voice coil has to reciprocate back and forth, which drives the paper cone to vibrate back and forth, producing sound.
Exercise: As shown in the figure, conduct an experiment on the force movement of a energized wire in a magnetic field, and answer the following questions:
(1) Place the wire in the magnetic field, turn on the power supply, and let the current pass through the wire ab. You will find that the wire ab______;
(2) Swap the positive and negative poles of the power supply and connect it to the circuit so that the direction of the current through the wire is opposite to the original one. At this time, the wire ab______;
(3) Keep the positive and negative poles of the power supply unchanged, and reverse the magnetic poles of the magnet so that the direction of the magnetic field is opposite to the original. At this time, the wire ab______. From this it can be concluded that the energized wire will be acted upon by a force in the magnetic field, and the direction of the force is related to both the direction of ______ and the direction of ______.
summary
1. The effect of magnetic field on energized conductors
2. Left-hand rule
3. Moving coil speakers
Keywords: teaching courseware of magnetic phenomena, teaching courseware of the force of a magnetic field on a current-carrying wire, download of Beijing Normal University Edition Physics PPT courseware for the second volume of the ninth grade, download of the ninth-grade physics slide courseware, download of magnetic phenomena PPT courseware, force of a magnetic field on a current-carrying wire Download force PPT courseware, .PPT format;
For more information about the PPT courseware "Magnetic Phenomenon: The Force Acting on a Current-carrying Wire by a Magnetic Field", please click on the "Magnetic Phenomenon ppt: The Force Acting on a Current-carrying Wire" ppt tag.
"The force of the magnetic field on the current-carrying wire" Magnetic Phenomenon PPT Courseware 2:
"The Force of the Magnetic Field on the Electrified Wire" Magnetic Phenomenon PPT Courseware 2 Experience the Effect of the Magnetic Field on the Electrified Straight Wire Activities: Prepare desk lamps and bar magnets. Activity 1: Place the bar magnet directly in contact with a desk lamp that is not powered on and observe whether the filament in the bulb swings. Activity 2: Put the table...
File Info
Update Time: 2024-10-19
This template belongs to Physics courseware Beijing Normal University Ninth Grade Physics Volume 2 industry PPT template
"The force of a magnetic field on a current-carrying wire" Magnetic Phenomena PPT courseware Simple campus recruitment activity planning plan summary enterprise and institution recruitment publicity lecture PPT template is a general PPT template for business post competition provided by the manuscript PPT, simple campus recruitment activity planning plan summary enterprise and institution recruitment promotion Lecture PPT template, you can edit and modify the text and pictures in the source file by downloading the source file. If you want more exquisite business PPT templates, you can come to grid resource. Doug resource PPT, massive PPT template slide material download, we only make high-quality PPT templates!
Tips: If you open the template and feel that it is not suitable for all your needs, you can search for related content "The force of a magnetic field on a current-carrying wire" Magnetic Phenomena PPT courseware is enough.
How to use the Windows system template
Directly decompress the file and use it with office or wps
How to use the Mac system template
Directly decompress the file and use it Office or wps can be used
Related reading
For more detailed PPT-related tutorials and font tutorials, you can view: Click to see
How to create a high-quality technological sense PPT? 4 ways to share the bottom of the box
Notice
Do not download in WeChat, Zhihu, QQ, built-in browsers, please use mobile browsers to download! If you are a mobile phone user, please download it on your computer!
1. The manuscript PPT is only for study and reference, please delete it 24 hours after downloading.
2. If the resource involves your legitimate rights and interests, delete it immediately.
3. Contact information: service@daogebangong.com
"The force of a magnetic field on a current-carrying wire" Magnetic Phenomena PPT courseware, due to usage restrictions, it is only for personal study and reference use. For commercial use, please go to the relevant official website for authorization.
(Personal non-commercial use refers to the use of this font to complete the display of personal works, including but not limited to the design of personal papers, resumes, etc.)