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
Beijing Normal University eighth grade physics volume one
Shanghai Science Edition 8th Grade Physics
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
!["Voltage" Voltage and Resistance PPT Courseware 2](http://daogebangong.oss-cn-beijing.aliyuncs.com/ppt/preview/1/04799e72-2bea-4352-ad67-37ba5a2879c7.webp)
Category | Format | Size |
---|---|---|
Lu Jiao Edition Ninth Grade Physics Volume 1 | pptx | 6 MB |
Description
"Voltage" Voltage and Resistance PPT Courseware 2
1. Voltage
1. The meaning of voltage
For there to be current in a circuit, there must be voltage across it.
The function of the power supply is to provide voltage to both ends of the electrical appliance.
2. Unit of voltage:
International unit: volt (volt), referred to as volt (V).
Commonly used units: kilovolts (kV); millivolts (mV).
Conversion: 1 kV =1 000 V= 103 V
1 mV =0.001 V= 10-3 V
2. Measurement of voltage
1. Voltmeter
Read the instructions:
Purpose
(1) A voltmeter is an instrument for measuring low-value DC voltage;
(2) Connection of commonly used voltmeters;
(3) Usually two measuring ranges are used: (0~3 V) and (0~15 V).
Structure
See the figure for the appearance. The pointer is set to zero at the left end of the scale. There are two scales on the scale, which are 0~3 V and 0~15 V. The zero adjuster is directly below the reading window. The terminals are marked with "—", "3", and "15" respectively, among which the "—" terminal is the common terminal.
use
When measuring the voltage across a component with a DC voltmeter, it should be connected in parallel with the component. The terminal marked "-" should be close to the negative terminal of the power supply, and the other terminal is close to the positive terminal of the power supply. The maximum measured value of the range used must be greater than the voltage across the circuit under test.
When the approximate value of the measured voltage is not known in advance, if it is determined that the measured voltage will not exceed 15 V, you can first use the range with the maximum measurement value of 15 V. If the measured voltage does not exceed 3 V, in order to improve the reading Accuracy, you can instead use a range with a maximum measurement value of 3 V for measurement.
2. Practice measuring voltage with a voltmeter
experiment
(1) How to connect the voltmeter?
(2) Reading of voltmeter
Reading steps:
The first step is to look at the measuring range;
The second step is to look at the minimum graduation value;
The third step is reading.
(3) Manually measure the voltage across the electrical appliance and the voltage across the power supply.
hint
(1) After zero adjustment (adjust the pointer to the zero scale), connect the voltmeter in parallel with the circuit under test (it can only be connected in parallel with the part under test). The "-" terminal is close to the negative pole of the power supply, and "3" or The "15" binding post is located near the positive terminal of the power supply.
(2) The 3 V range uses two terminals "—" and "3", and each small division of the scale is 0.l V, and each large division is 1 V; the 15 V range uses two terminals "—" and "15", and each scale 0.5 V for small divisions and 5 V for each large division.
(3) Estimate the measured voltage and select the appropriate range. If it is determined that the voltage being measured will not exceed 15 V, you can first use the range with the maximum measurement value of 15 V. If the measured voltage does not exceed 3 V, to improve the accuracy of the reading, you can switch to a range with a maximum measurement value of 3 V.
practice
1. What are the readings of the two meters?
2. What are the readings of each of the three meters?
3. Connect the circuit, make the bulb glow and measure the voltage across the bulb with a voltmeter.
4. Draw the corresponding circuit diagram.
Class summary
1. The power supply provides voltage to both ends of the electrical appliance. Voltage is usually represented by the letter U, the unit is volts, and the symbol is V.
2. The voltmeter is connected in parallel with the electrical appliance being measured. The positive and negative terminals must be connected correctly (current flows in from the positive terminal and flows out from the negative terminal). The voltage being measured cannot exceed the maximum measurement value of the voltmeter.
Keywords: Voltage and resistance teaching courseware, Voltage teaching courseware, Lujiao version ninth grade physics PPT courseware download, ninth grade physics slide courseware download, Voltage and resistance PPT courseware download, Voltage PPT courseware download, .PPT format;
For more information about the "Voltage and Resistance Voltage" PPT courseware, please click the Voltage and Resistance ppt Voltage ppt tab.
"The Relationship between Current, Voltage and Resistance" PPT courseware:
"The Relationship between Current, Voltage and Resistance" PPT courseware Part 1: Introduction of the topic Please look at the following experiment and think about the problem. Please think: What can be done to dim the light bulb? Method 1: Remove a battery Method 2: Add resistance to the circuit Question: Same...
"The Relationship between Current, Voltage and Resistance" PPT:
"The Relationship between Current, Voltage and Resistance" PPT Part One Content: Thinking: Which physical quantity is most susceptible to the magnitude of the current passing through a certain conductor in a certain circuit, the voltage at both ends of this conductor, and the resistance of this conductor, which physical quantity is most susceptible to the other two Due to changes in quantity...
"Measurement of Voltage" PPT courseware download:
"Measurement of Voltage" PPT courseware download Part 1: Voltage 1. Voltage causes the free charges in the circuit to move directionally to form a current. 2. The power supply is a device that provides voltage. 3. The symbol for voltage: _____. 4. The main international unit of voltage: _____ ..
File Info
Update Time: 2024-09-11
This template belongs to Physics courseware Lu Jiao Edition Ninth Grade Physics Volume 1 industry PPT template
"Voltage" Voltage and Resistance PPT Courseware 2 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 "Voltage" Voltage and Resistance PPT Courseware 2 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
"Voltage" Voltage and Resistance PPT Courseware 2, 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
!["Voltage" Voltage and Resistance PPT Courseware 2](http://daogebangong.oss-cn-beijing.aliyuncs.com/ppt/preview/1/c028e04c-3f8c-418b-b601-751e135f554b.webp)