People's Education Edition Physics for Grade 8, Volume 2
People's Education Edition Ninth Grade Physics Complete Book
Shanghai Science Edition Ninth Grade Physics
People's Education Edition Physics for Grade 8, Volume 1
Shanghai Science Edition 8th Grade Physics
Beijing Normal University eighth grade physics volume one
Lu Jiao Edition Ninth Grade Physics Volume 1
Beijing Normal University Ninth Grade Physics Volume 1
Lu Jiao Edition Ninth Grade Physics Volume 2
Guangdong and Shanghai Edition Ninth Grade Physics Volume 1
Lu Ke Edition High School Physics Compulsory Course One
People's Education Press High School Physics Compulsory Course II
Guangdong and Shanghai version of eighth grade physics volume 2
Beijing Normal University Ninth Grade Physics Volume 2
Lu Jiao Edition Eighth Grade Physics Volume 2
Guangdong and Shanghai Edition Ninth Grade Physics Volume 2
!["Measuring the Electric Power of Small Light Bulbs" Electric Power PPT Courseware 4](http://daogebangong.oss-cn-beijing.aliyuncs.com/ppt/preview/1/d879bdaf-2eac-4b19-8a2b-e5563682e72a.webp)
Category | Format | Size |
---|---|---|
People's Education Edition Ninth Grade Physics Complete Book | pptx | 6 MB |
Description
"Measuring the Electric Power of Small Light Bulbs" Electric Power PPT Courseware 4
Review questions
1. As shown in the picture is the nameplate of the light bulb, tell the meaning of "220-40":
The rated voltage of the bulb is 220V
The bulb is rated at 40W
2. As shown in the picture, there is a small light bulb for experiment. It is marked with "2.5V". Do you know what "2.5V" means?
The bulb is rated at 2.5V
What should I do if I want to know the wattage rating of my light bulb?
Use an ammeter to measure the current when the small bulb is normally emitting light (voltage is 2.5V), and use P=UI to find its rated power.
conduct experiment
1. Connect the circuit according to the circuit diagram
When connecting the circuit, you should pay attention to:
(1) The switch should ______,
(2) The rated voltage of the small light bulb is about 2.5V and the resistance is about 8Ω. The ranges that should be selected for the voltmeter and ammeter are _________ and ___________ respectively.
(3) Before closing the switch, the sliding rheostat should be adjusted to __________.
2. Close the switch, adjust the slider so that the voltmeter reading reaches 2.5V, and record the ammeter reading;
3. Adjust the slider so that the voltmeter's reading is slightly greater than 2.5V (maximum adjusted to 3V), and note the ammeter's reading;
4. Adjust the slider so that the voltmeter’s reading is less than 2.5V (can be adjusted to 2V), and note the ammeter’s reading.
Have you mastered it?
1. In the experiment of measuring the electric power of a small light bulb, the role of the sliding rheostat in the experiment is:
(1)______________;
(2)______________ .
See who reacts fastest
1. The two bulbs A and B are marked with "110V 25W" and "110V 100W" respectively. If the two lamps are connected in series on a 220V circuit, what may happen is ( )
A. Both lights can shine normally
B. Both lights were burned out
C. Lamp A is burned out, lamp B is intact
D. Lamp A is intact, lamp B is burned out
2. Two light bulbs "10V 5W" and "3V 1.8W" are connected in series in a circuit. It is known that both lights can emit light. What about the lighting conditions of the two lights ( ) if they are connected in parallel on the circuit? ( )
A. The "10V 5W" light is on
B. The "3V 1.8W" light is on
C. Same brightness
D. Cannot be compared
3. There are three electric lamps A, B, and C in the household circuit. Their rated powers are 40W, 60W, and 100W respectively. When they all emit light normally, the brightest one is ( ).
A. A lamp
B. B lamp
C. Bing lamp
D. Three lights are equally bright
4. In the experiment of measuring the electrical power of a small light bulb (2.5V 0.5A),
(1) The power supply should be at least ____ dry batteries
(2) To measure the rated power of the small light bulb, after closing the switch, the correct operation is ____________________.
(3) The indications of the voltmeter and ammeter during a certain experiment are as shown in the figure, then the actual power of the small light bulb at this time is ____W.
Keywords: Electric power teaching courseware, Measuring the electric power of small light bulbs teaching courseware, New People's Education Edition ninth grade physics PPT courseware, Ninth grade physics slide courseware download, Electric power PPT courseware download, Measuring the electric power of small light bulbs PPT courseware download, .ppt format
For more information about the PPT courseware "Electrical Power Measuring the Electric Power of Small Light Bulbs", please click the Electric Power ppt Measuring the Electric Power of Small Light Bulbs ppt tag.
"Measuring the Electric Power of Small Light Bulbs" Electric Power PPT Courseware 9:
"Measuring the Electric Power of Small Light Bulbs" Electric Power PPT Courseware 9 Teaching Objectives 1. Deepen the understanding of electric power. 2. Consolidate the operating skills of ammeters and voltmeters. 3. Experience the difference between rated power and actual power through measurement. 4. Train students to use the measurement formula P=U..
"Measuring the Electric Power of Small Light Bulbs" Electric Power PPT Courseware 8:
"Measuring the Electric Power of Small Light Bulbs" Electric Power PPT Courseware 8 Want to Discuss Commonly used small light bulbs are marked with rated voltage (such as 2.5 V, 3.8 V), but not with rated power. For example, the rated voltage of a small light bulb is 2.5 V. How to measure its rated electrical power? Student...
"Measuring the Electric Power of Small Light Bulbs" Electric Power PPT Courseware 7:
"Measuring the Electric Power of Small Light Bulbs" Electric Power PPT Courseware 7 Concept 1. The work done by the current in unit time is called electric power, the formula P=W/T. 2. Electric power is equal to the product formula of voltage and current ________. Method of measuring electric power 1. According to P=W/T, measure...
File Info
Update Time: 2024-09-05
This template belongs to Physics courseware People's Education Edition Ninth Grade Physics Complete Book industry PPT template
"Measuring the Electric Power of Small Light Bulbs" Electric Power PPT Courseware 4 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 "Measuring the Electric Power of Small Light Bulbs" Electric Power PPT Courseware 4 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
"Measuring the Electric Power of Small Light Bulbs" Electric Power PPT Courseware 4, 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.)
Preview
!["Measuring the Electric Power of Small Light Bulbs" Electric Power PPT Courseware 4](http://daogebangong.oss-cn-beijing.aliyuncs.com/ppt/preview/1/383b3ed3-6118-4936-8631-f5c2bc41170a.webp)