Atoms
Celestial Bodies
- Space Travel Equipment
- Stars
- Rotation and Revolution
- Relation Between Escape Velocity And Orbital Velocity
- Dwarf Planets
- Difference Between Solar Eclipse And Lunar Eclipse
- Difference Between Equinox And Solstice
- The Escape Velocity Of Earth
- Solar System
- Difference Between Stars And Planets
- Difference Between Asteroid And Meteoroid
- Constellations
Circuits
电路 (diàn lù)
电路 (Diànlù)
电路
通信系统Pdf
二极管
地球科学
电荷
电
- 类型的齿轮
- 电子产品在日常生活中
- 类型的汽车
- 类型的直流电机
- 类型的交流电机
- 晶体管工作
- 转矩电流环
- 电动机
- 电阻温度依赖性
- Rms值交流电
- 电抗和阻抗
- 相量表示法交流
- 平行板电容器
- 焦耳定律
- 电力
- 磁场对载流导线的影响
- 电流密度
- 导体绝缘体
- 导电
- 碳电阻器
- 直流发电机
- 类型的发电机
- 类型的电流
- 直流发电机类型
- Torque On Dipole
- 电流的热效应
- 电动发电机
- 静电
- 电阻率不同的材料
- 电场的物理意义
- 介电常数和磁导率
- 电能和权力
- 电流在导体
- 电动汽车
- 位移电流
- 电阻与电阻率之间的差异
- 电动机和发电机之间的区别
- 接地和接地之间的区别
- 电流线圈
- 水的电导率
- 导电的液体
Electricity
电磁波
电磁
静电学
能量
- 能量
- 能源类型
- 热能
- 太阳能项目
- 太阳能汽车
- Ev和Joule之间的关系
- 动能和完成的功
- 能量转换
- 一维和二维的弹性和非弹性碰撞
- 常规能源和非常规能源
- 太阳能炊具
- 潮汐能
- 能源
- 太阳能和光伏电池
- 动能与动量的关系
- 热量与焦耳的关系
- 能源及其对环境的影响
- 能源考虑
流体
武力
Force
摩擦
万有引力
热
动力学理论
光
- 镜面反射漫反射
- 人眼
- 结构人眼功能
- 阴影的形成
- 反射和折射之间的区别
- 相干源
- 光的透射、吸收和反射
- 透明半透明和不透明
- 阳光白色
- 单狭缝衍射
- 拉曼散射
- 粒子自然光光子
- 真实图像与虚拟图像的区别
- 衍射和干涉的区别
磁性
运动
- 运输历史记录
- 速度-时间图
- 旋转动能
- 刚体和刚体动力学
- 扭矩和速度之间的关系
- 粒子的直线运动
- 周期性运动
- 动量和惯性之间的差异
- 动量守恒
- 运动测量类型
- 扭矩
- 慢速和快速运动
- 滚动
- 刚体平移运动和旋转运动
- 相对速度
- 径向加速度
- 速度和速度之间的区别
- 动力学和运动学的区别
- 连续性方程
- 线性动量守恒
自然资源
核物理学
光学
Optics
- Reflection of Light and Laws of Reflection
- Concave Lens
- Total Internal Reflection
- Thin Lens Formula For Concave And Convex Lenses
- Spherical Mirror Formula
- Resolving Power Of Microscopes And Telescopes
- Refractive Index
- Refraction Of Light
- Refraction Light Glass Prism
- Reflection On A Plane Mirror
- Reflection Lateral Inversion
- Rainbow
- Photometry
- Difference Between Simple And Compound Microscope
- Difference Between Light Microscope And Electron Microscope
- Concave Convex Mirror
- Toric Lens
- The Lens Makers Formula
- Simple Microscope
Oscillation
Pressure
- Thrust Pressure
- Relation Between Bar And Pascal
- Regelation
- Sphygmomanometer
- Relation Between Bar And Atm
- Difference Between Stress And Pressure
Quantum physics
- Quantum physics
- Rydberg Constant
- Electron Spin
- Casimir Effect
- Relativity
- Quantum Mechanics
- Electrons And Photons
Radioactivity
- Relation Between Beta And Gamma Function
- Radioactivity Beta Decay
- Radioactive Decay
- Stefan Boltzmann Constant
- Radioactivity Gamma Decay
- Radioactivity Alpha Decay
- Radiation Detector
Scalars and Vectors
- Scalars and Vectors
- Triangle Law Of Vector Addition
- Scalar Product
- Scalar And Vector Products
- Difference Between Scalar And Vector
Scientific Method
- Scientific Methods
- Safety Measures Technology
- Difference Between Science And Technology
- Scientific Investigation
Semiconductors
- Semiconductor Devices
- Junction Transistor
- Semiconductor Diode
- Difference Between Npn And Pnp Transistor
Solid Deformation
- Solid State Physics
- Solid Deformation
- Stress
- Shear Modulus Elastic Moduli
- Relation Between Elastic Constants
- Elastic Behavior Of Solids
- Tensile Stress
- Stress And Strain
- Shearing Stress
- Elastomers
- Elastic Behaviour Of Materials
- Bulk Modulus Of Elasticity Definition Formula
Sound
- Sound waves
- Timbre
- Speed Of Sound Propagation
- Sound Waves Need Medium Propagation
- Sound Reflection
- Sound Produced Humans
- Doppler Shift
- Difference Between Sound Noise Music
- The Human Voice How Do Humans Create Sound With Their Vocal Cord
- Sound Vibration Propagation Of Sound
- Sound Produced Vibration Object
- Reverberation
- Doppler Effect
System of Particles and Rotational Dynamics
Thermal Properties of Matter
- Thermal Properties of Materials
- Thermal Stress
- Thermal Expansion Of Solids
- Thermal Conductivity Of Metals
Thermodynamics
- Statistical Physics
- SI Units List
- Statistical Mechanics
- Reversible Irreversible Processes
- Carnots Theorem
- Temperature
- Kelvin Planck Statement
- Difference between Isothermal and Adiabatic Processes
Units and measurements
- Density of Air
- The Idea Of Time
- Difference Between Pound And Kilogram
- Difference Between Mass And Volume
- Dimensional Analysis
- Density Of Water
- Time Measurement
- Standard Measurement Units
- Relation Between Kg And Newton
- Relation Between Density And Temperature
- Difference Between Mass And Weight
Waves
- Space Wave Propagation
- Sharpness Of Resonance
- Relation Between Group Velocity And Phase Velocity
- Relation Between Amplitude And Frequency
- Periodic Function
- P Wave
- Destructive Interference
- Transverse Waves
- Travelling Wave
- Standing Wave Normal Mode
- S Waves
- Relation Between Frequency And Velocity
- Reflection Of Waves
- Phase Angle
- Period Angular Frequency
Work, Energy and Power
- Derivation Of Work Energy Theorem
- Conservation Of Mechanical Energy
- Relation Between Work And Energy
- Destruction Caused Cyclones
Physics Experiments
- Determine Resistance Plotting Graph Potential Difference versus Current
- To find the weight of a given Body using Parallelogram Law of Vectors
- To study the variation in volume with pressure for a sample of air at constant temperature by plotting graphs between p and v
- To measure the thickness of sheet using Screw Gauge
- To find the value of V for different U values of Concave Mirror find Focal Length
- To find the Surface Tension of Water by Capillary Rise Method
- To find the Resistance of given wire using Metre Bridge and hence determine the Resistivity of its Material Experiment
- Determine Mass of Two Different Objects Using Beam Balance
- Tracing the path of the rays of light through a glass Prism
- Tracing path of a ray of light passing through a glass slab
- Tornado Bottle
- To find image distance for varying object distances of a convex lens with ray diagrams
- To find force constant of helical spring by plotting a graph between load and extension
- To find focal length of concave lens using convex lens
- To find effective length of seconds pendulum using graph
- To find downward force along inclined plane on a roller due to gravitational pull of the earth and its relationship with the angle of inclination
- To draw the IV characteristic curve for p n junction in forward and reverse bias
- To determine Young’s modulus of elasticity of the material of a given wire
- To determine the internal resistance of a given primary cell using a potentiometer experiment
- To determine the coefficient of viscosity of given viscous liquid by measuring terminal velocity of given spherical body
- To determine specific heat capacity of given solid by method of mixtures
- To determine radius of curvature of a given spherical surface by a Spherometer
- Scope and Excitement of Physics
- Rocket science
- Relationship between frequency and length of wire under constant tension using Sonometer
- To determine equivalent resistance of resistors when connected in series and in parallel
- To convert the given galvanometer of known resistance and figure of merit into a voltmeter of desired range and to verify the same experiment
- To determine minimum deviation for given prism by plotting graph between angle of incidence and angle of deviation
- To compare the emf of two given primary cells using potentiometer experiment
Introduction
电磁学是物理学中最重要的分支之一。部队中我们看到在我们的日常生活中,除了重力的力量都是电磁。在生活中我们遇到的所有部队除了重力(包括线的张力,表面的垂直力和摩擦力)是电磁力是原子间出现。
任何中性物质有相同数量的电子和质子。如果离开原子最外层电子,成为自由电子,导致电流。一个原子失去了一个外层电子有更高的正电荷。当一个物体摩擦,粒子迁移从一个对象到另一个。
Electrical Force
两种类型的费用之间的电力。
一个是有吸引力的,另一个是让人反感。相同的电荷相互排斥;相反电荷相互吸引。电荷之间的力称为电力。这个力属于非接触力的类型。因为这个运动没有触摸对方的指控。周边地区一个电荷,可以感受到它的电荷被称为电场。力的方向作用于一个小正电荷叫做< img src = " https://www.tutorialspoint.com/assets/questions/media/539016 - 1674556613. jpg”类=风格=“note-float-right浮动:正确;宽度:273.5 px;高度:124.925 px;" / >电场的方向和力线所代表的。线的直线或曲线绘制的方向均匀电荷会在电场中移动。他们都是虚构的。
Fig 2. Properties of Charges
How would you define an Electric Force?
电场力与产品直接相关的费用和逆相关,它们之间的距离的平方。两个点之间的静电力的指控是由牛顿第三定律。力在一个电荷作为反应和力量在另一个相反的反应。
What does the size of Electric Force depend on?
电力取决于任何两个电荷之间的距离点和点粒子上的指控的产物。但在牛顿第三定律,重力等于产品的质量。所以,有一些重要的区别牛顿第三定律和库仑定律。
What is Coulomb’s Law?
电场力成正比的产物粒子的电荷和它们之间的距离的平方成反比。< / p > < / p > < / p > < / p >
< / p >
图3所示。两个点之间的库仑力
< span风格= "粗细:var (——bs-body-font-weight); " > $ $ mathrm {F:α:压裂{{q_1} {q_2}} {r ^ 2}} $ $ < / span >
1786年,库仑力的方程提出两个驻点在自由空间电荷。考虑两个静止的点粒子隔开距离r在真空与指控美元mathrm {q_{1}} $和$ mathrm {q_ {2}} $。根据这一法律,点电荷的作用力美元mathrm {q_{1}}在点电荷mathrm美元{q_{2}}被编写为美元
$ $ mathrm {overrightarrow f {21} {} = kfrac {q_ {1} q_ {2}} {r ^ {2}} widehat {r_ {12}}} $ $
在美元mathrm {widehat {r_{12}}}是单变量向量来自美元mathrm {q_{1}} $美元mathrm {q_{2}}和k美元自适应常数。
Important properties
库仑定律具有相同的结构和牛顿万有引力定律。在这两种情况下,力逆相关距离。
两个物体之间的引力总是吸引人的。库仑力是一个有吸引力或排斥力取决于粒子的性质。
引力常数的值是$ mathrm {G = 6.626 ime 10 ^ {-11} Nm ^{2}公斤^ {2}}$。但库仑常数的值mathrm美元{k = 9 ime 10 ^ {9} Nm ^ {2} C ^ {2}} $。“k”在库仑年代法律的价值远远大于g .静电力的价值远远大于物体的引力质量。
重力是相同的是否静止或运动群众。但是,粒子运动时,另一个力(劳伦斯力)开始表演和库仑力。
库仑定律只适用于点电荷粒子。但点粒子只是一个概念。几乎不可能的。如果粒子的大小是非常小的相比,它们之间的距离,我们可以使用。
两个物体之间的引力是独立于媒介中。例如,重力作用的价值两个1公斤质量不会改变不管他们是否放置在空气或水。但两个电子之间的静电作用力取决于介质的性质,他们被放置。
What is the formula for electric force?
库仑定律给出的公式提供电力
$$mathrm{Fpropto frac{q_{1}q_{2}}{r^{2}}}$$
$ $ mathrm {F = k压裂{q_ {1} q_ {2}} {r ^ {2}}} $ $
$$mathrm{F=frac{1}{4pi epsilon _{0}} frac{q_{1}q_{2}}{r^{2}}}$$
F -电力
$ mathrm {q_ {1} q_{2}} $ -粒子的指控
k - constant($mathrm{frac{1}{4pi epsilon _{0}}}$)
r -之间的距离的指控
Electrical Force Examples
大约二千年前,古希腊人发现一种叫做琥珀的物质(一个半透明的,化石)摩擦与动物皮毛或羊毛吸引了树叶和灰尘。所以琥珀的特点。时,它产生电力擦,其他的事情。
当干燥的头发梳理,把附近的一小片纸,就起诉。一个气球摩擦在我们一方面坚持墙上没有任何摩擦。在所有上述操作,当一个物质摩擦表面的另一种物质,他们成为电力充电和相互吸引。
玻璃棒摩擦与丝绸还发现吸引纸片。因此,即使玻璃棒摩擦被指控与一个合适的材料。它吸引了电力的纸。
当一个带电玻璃棒带摩擦棒附近,他们互相吸引。同时,如果带电玻璃棒带接近另一个玻璃棒,他们会互相排斥。从这些观察结果可以得出以下结论。
负责接收的橡胶棒不同于电荷由玻璃棒接收。
一个带电橡胶棒排斥另一个指控橡胶棒。由此,可以说,同种电荷相互排斥。
负责橡胶棒吸引了玻璃棒。,众所周知,玻璃棒上的电荷,电荷在球面上不相同的类型和不同的电荷相互吸引。
Conclusion
The atom was known to be electrically neutral through the pioneering studies of scientists such as J.J.Thomson and A.Rutherford who carried out their research in the late 19th and early 20th centuries. All the forces we encounter in pfe except gravity (including the tension of a wire, the vertical force of a surface, and the force of friction) are electromagnetic forces that appear between atoms. 两种类型的费用之间的电力。 One is attractive and the other is repulsive. Same charges repel each other; Opposite charges attract each other. The force between electric charges is called electric force. This force belongs to the type of non-contact force. In 1786, Coulomb presented the equation for the force between two stationary point electric charges in free space.
FAQs
Q1. Define emf.
答。电池和其它来源的电能作为电阻,推动费用流通过导线或导线。这推动行动的权力来源是通过他们的电动势(emf)。在一个电路,它相当于所做的工作单位一旦它绕电路。
Q2。电场线是什么?
答。电场线是一系列的线画的电场在空间中的一个点。电场线从正电荷开始和结束在相反电荷或无穷。
第三季。解释的原则微波炉
答。微波炉工作力矩作用于一个电偶极子的原则。我们知道我们所吃的食物中的水分子是稳定的电偶极子。本产品是振荡产生的微波电磁波。因此他们施加扭力的水分子。
第四季度。为什么家庭电路使用铜线?
答。铜导体电阻很低。出于这个原因,铜线用于家庭电路。与高电阻材料围绕这些电线。
Q5。给一个磁场
Ans。把磁铁放在桌子上和附近一些铁纸夹。移动磁铁慢慢地向回形针的回形针点坚持磁铁。从上面的函数中,我们观察到磁铁周围有一个无形的领域。