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class 10th Physics Electricity important points

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class 10th Physics Electricity important points https://cbsenotesallsub.blogspot.com/2023/12/class 10th physics Electricity important points.html   class 10th   Physics by Daksh amit sir     https://youtube.com/playlist?list=PLnihZCE1Xsyj75eaKk9xpE8-BFCfI1n4i&si=yA1TU7jpJAJped2B ch-  Electricity  Charge  charge = Number of electron x e Q = ne n= q/e          where   Q= charge  n = number of electrons  e =  1.6 x 10 to the power mines 19 SI unit of charge is couloumb. 1 coulomb charge have 6.25x10 to the power 18 electrons Like charge always repel to each other. Unlike charge always attract to each other. Those substances by which electricity can flow are known as conductors Eg  Silver, Copper, Aluminum, Nichrome, Graphite, Mercury, Manganin  wet  wood  etc . Those  Substances by which electricity can not flow are called  insulators  Eg sulpher,cotton, air, paper ,mica, bakelite,polythene ,plastic, dry wood etc The presence  of free electrons in a metals make it a conductor There a
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class 10th Light ,Reflection and Refraction

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  CLASS 10th  ICSE/ CBSE Notes - By Er. Amit Singh For more Notes click this link  https://cbsenotesallsub.blogspot.com/ Light-Reflection and Refraction what is light   ? Light is the form of energy that enable us to see.  There are a number of common wonderful phenomena associated with light such as - image formation by mirrors The twinkling of stars. The beautiful colours of rainbow Bending of light  Properties of light It is electromagnetic wave so does not require any medium to travel. Light tends to travel in straight line. Light has dual nature i.e. wave as well as particle. Light casts shadow. Speed of light is maximum in vaccum. when light falls on a surface following may happen. Reflection Refraction Absorption Reflection Reflection : Bouncing of light when it strikes on a polished surface like mirror. A highly polished surface such as a mirror  reflects most of the light falling on it.   Law of Reflection according to law of reflection: Angle of incidence is equal to the ang
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10th Physics Electricity notes

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  CLASS 10th  ICSE/ CBSE Notes- By Er. Amit Singh For more Notes click this link  https://cbsenotesallsub.blogspot.com/ ELECTRICITY Electricity , phenomenon associated with moving  electric charges .  Electric  charge  is a fundamental property of matter. The unit of electric charge in the M.K.S. and  SI  systems is the  coulomb    In electricity the particle involved is the  electron . Electric charges are of two  types,  positive  charge Negative charge For more Notes click this link  https://cbsenotesallsub.blogspot.com/ Positive charge A positive charge occurs  when the number of protons exceeds the number of electrons .  A positive charge may be created by adding protons to an atom or object with a neutral charge.  A positive charge also can be created by removing electrons from a neutrally charged object When an object has a positive charge it means that it has more protons than electrons. Negative charge When an object has a negative charge it means that it has more electrons th
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