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
每一个宇宙中的物质是由分子组成的。因此,许多原子带正电和负电。这种引力被称为化学键。这个键发生由于电荷相反的离子之间的静电力或通过共享电子。以前称为离子键,后来称为共价键。分子的极性取决于它们之间的粘结。
带电粒子的运动负责电能。能量从带电粒子的动能或势能是电能。带电粒子在原子,分子或离子的电荷。有一个带电粒子之间的引力或斥力取决于库仑定律。
What is Dielectric?
介电材料是不良导体或绝缘体。他们没有任何自由电子。他们用atom绑定。自由电子负责电流的流动。随着导体自由电子导电。绝缘体没有自由电子,所以他们不能导电。介电材料是绝缘体不导电,但他们得到的极化电场时。这被称为介电极化。纸、玻璃、云母和蒸馏水介质材料的一些例子。真空介电材料的也是一个例子。介电材料分为两个极性电介质和非极性电介质材料。
What is Capacitance?
材料储存电荷的能力称为电容。一般来说,电容器是由两个导电板由绝缘材料像空气,纸,或橡胶。
导电板之间的绝缘材料,称为介质。当两个导电板连接到电池通过连接一个盘子正极和一个负极电场使电子向正极移动。两个导体是带电的,一个是带正电,另一个是带负电。介电材料使电子没有穿越盘子。
因此,存储能量。时使用这个存储能量与其他电路。电容电荷之间的比率是存储在一个导体和电位差。
$$mathrm{C=frac{Q}{v}}$$
的年代。我单位的法拉电容。two-plate电容器的电容也表示为,
$$mathrm{C=frac{epsilon _{0}epsilon _{r}A}{d}}$$
C表示电容器的电容。美元$ mathrm{ε_{0}}表示自由空间的介电常数。美元$ mathrm{ε_ {r}}表示相对介电常数。一个表示材料的横截面的面积。
D表示板之间的距离。
Need for Dielectric in a Capacitor
的两个主要原因,下面给出用于电容器电介质。的两个导电板连接到电池和费用是分开的,这样一个盘子一个正电荷,另一个包含一个带有一个负电荷。在相反的带电粒子之间的引力相互尝试连接。这减少了差距。一般来说,电介质是坏的导体或绝缘体可以减少这种倾向。导体之间的电场分化的分子电介质材料。两极分化降低了电场强度。它使沉积更多的指控。如果电场增加了绝缘子分解。电介质有很高的崩溃。
Effect of Dielectric on Capacitance
用于电容器的介质材料增加电容的有效面积。从而它增加电容的体积效率。如果介质是极性分子,它们在不同的取向没有电场。如果应用电场极化,产生电场相反的方向。减少的有效电场称为介电常数k。电容器的电容增加系数k。
The Capacitance of a Capacitor with Dielectric
让我们考虑两个导体板平行放置的分离距离d。一个是板的横截面的面积和分离介质是空气。如果电压V是应用于平行板电容器电容的电场
v $ $ mathrm {E =压裂{}{d} ............... (1)} $ $
根据高斯定律,电场是由,
$ $ mathrm {E =压裂{σ}{ε_ {0}}............... (2)}$ $
从方程(1)和(2),
v $ $ mathrm{压裂{}{d} =压裂{σ}{ε_ {0}}}$ $
美元$ mathrm{σ}表示表面电荷密度。它被定义为单位面积上的电荷
$$mathrm{sigma =frac{Q}{A}}$$
$$mathrm{frac{v}{d}=frac{sigma }{epsilon _{0}}=frac{Q}{epsilon _{0}A}}$$
$$mathrm{V=frac{Qd}{epsilon _{0}A}}$$
电容器的电容被定义为电荷之间的比例和电位差。
$$mathrm{C=frac{Q}{v}}$$
$$mathrm{C=frac{Q}{vfrac{Qd}{epsilon _{0}A}}}$$
$$mathrm{C=Q:xfrac{epsilon _{0}A}{Qd}}$$
$$mathrm{C=frac{epsilon _{0}A}{d}}$$
这是没有介质电容器的电容。如果添加了介质电容将成为美元mathrm {C =压裂{kepsilon _ {0}} {d}} $
Use of Capacitor
电容器是用在许多地方。下面列出了他们。
它们用于设备,需要快速释放电荷,例如闪光灯和电脑键盘。
高频电磁辐射产生和探测到电容器。
这是长期以来用于存储电能。
汽车发动机的点火系统使用电容器来消除火花。
用于制造振荡器、放大器、发射器等。
它是用来增加或减少交流电路的阻抗。
Conclusion
在本教程中,详细讨论了介质和电容。需要在电容器介质和介质对电容的影响也详细讨论。电容器的电容与介电和电容器的使用进行了讨论。
FAQs
Q1。绝缘强度和它的单位是什么?
答。生产电动突破所需的最大电压电路中被称为绝缘强度。它用一个伏特每单位厚度(v / m)。真空介电强度高。
Q2。介电常数是什么?影响介电常数的因素是什么?
Ans,介电常数之间的比率是材料的介电常数介电常数的自由空间。它是用k。
介电常数美元mathrm {k =压裂{ε}{ε_ {0}}}$
介电常数受温度影响,加热效应,频率,外加电压,湿度。
第三季。电介质材料的应用是什么?
答。一般来说,作为能量储存在电容器电介质材料。根据介电材料的性质,可以是气体,液体或固体介质。液晶显示器使用介质。介质谐振器振荡器使用陶瓷介质。高介电常数介电材料用于半导体的增强。Exposable组件是用介电材料涂层。
第四季度。电容的分类是什么?
答,电容器分为两种。他们是极化电容和无极性电容。极化电容用于只有一个方向等积极的还是消极的。无极电容用于过滤器。
Q5。给一些例子无极介电材料?
Ans。他们通常用于滤波电路在电子产品。使用的材料是陶瓷、造纸、聚合物薄膜和云母。