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Coulomb's Law in Electrostatics | SI Unit of charge

Coulomb's Law in Electrostatics Coulomb's law in electrostatics is the electrical analog of Newton's law of gravitation. In 1785, Coulomb measured the force of attraction or repulsion between two electrical charges by using a torsion balance. His observations are known as Coulomb's law in electrostatics. It states that two-point charges attract or repel each other with a force that is directly proportional to the product of the magnitudes of the charges and inversely proportional to the square of the distance between them. The force is repulsive if the charges are alike and attractive in case of unlike charges. Further, the electrostatic force between two charges is central in nature. It may be pointed out that Columb's law in electrostatics holds for stationary charges. Further, the two charges should be points in size. Consider that two charges q, and q2 are present at points A and B at a the distance r apart as shown in Fig. 1.03. Then, the force between the two

Conservation of charge | Properties of Electric Charge class 12

Conservation of charge Class 12 Just as in mechanics, the total linear momentum of an isolated system always remains constant, and the electric charge also obeys a similar law. It is called the law of conservation of charge. It states that for an isolated system, the net charge always remains constant. In any physical process, the charge may get transferred from one part of the system to another, but the net charge will always remain the same. In other words, the charge can neither be created nor destroyed. The following examples explain the law of conservation of charge: 1. We know that when a glass rod is rubbed with silk, the glass rod becomes positively charged and silk becomes negatively charged. The amount of positive charge on the glass rod is found to be exactly the same as the negative charge on silk. Thus, the system of glass rod and silk, which had zero net charge before rubbing, still possesses zero net charges after rubbing. 2. In all nuclear transformations, the proton nu

Kamiliant by American Tourister set of 3 reviews 79cm and 60cm

Today, we’re taking a closer look at the brand-new bag collection from American Tourister: Kamiliant. The Kamiliant collection is designed to provide maximum space and organization to help you stay organized and ready for anything. It comes in a variety of styles and colors to match your personal style and taste. Each bag in the collection has a unique design, but they each have the same thoughtful design features that will help you stay organized and on the go. Kamiliant by American Tourister KAM Kiza Polypropylene 68 cms Black Hardsided Check-in Luggage (KAM KIZA SP 68CM - BLACK) Product details Dimensions ‏ : ‎ 47 x 28 x 68 cm; 3.22 Kilograms Launch ‏ : ‎ 11 December 2019 Manufacturer ‏ : ‎ SAMSONITE SOUTH ASIA PVT. LTD Model‏ : ‎ KAM KIZA SP 68CM - BLACK Country of Origin ‏ : ‎ India Department ‏ : ‎ Unisex-adult Manufacturer ‏ : ‎ SAMSONITE SOUTH ASIA PVT. LTD, SAMSONITE SOUTH ASIA PVT. LTD GAT NO.159 TO 163,GONDE,TALUKA-IGATPURI NASIK 422403;Tel No. 02553-229700 Packer ‏ : ‎ SAMS

Scope and Importance of macroeconomics in points class 12

The term Macro in English has its origin in the Greek term Makros which means Large. In the context of macroeconomics, 'large' means the economy as a whole. Thus, macroeconomics is defined as a branch of economics that studies economic activities including economic issues or economic problems) at the level of an economy as a whole. It focuses on issues such as output level, employment level, and price level in the context of the economy as a whole. It considers macroeconomic variables such as aggregate mand and aggregate supply. Aggregate demand refers to mand for all goods and services in the economy as a whole. aggregate supply refers to the output of all goods and services in theonomy as a whole. Macroeconomics is concerned with the economy as a whole or large segments of it. In macroeconomics, attention is focused on such problems as the level of unemployment, the rate of inflation, the nation's total output, and other matters of economy-wide significance." -M.H. S

Human Geography Nature and scope MCQ ncert class 12 notes

DEVELOPMENT OF HUMAN GEOGRAPHY AS A DISCIPLINE In the initial stage of development Geography heavily depended on the study of physical phenomena only. This major emphasis on physical geography may be attributed to the fact that in the initial stage of development of geography it was taught by teachers who had a Geology background Carl Ritter and Ratzel were among the first who considered man as an agent who brings a change in the landscape. Ratzel stressed synthesizing physical and cultural phenomena to have a complete view of the horizon of the earth. Nevertheless, it was Vidal-de-Lablache who founded the school of human geography According to him, it is unreasonable to draw boundaries between natural and cultural phenomena; they should be regarded as united and inseparable. In an area of human settlement, nature changes significantly because of the presence of man, and those changes are greatest where the presence of man and those changes are greatest where the level of the material

Electric charges and fields class 12 notes, electrostatic induction, charging by induction

Electric charges and fields class 12 Notes All the substances are made of small particles called atoms , which are made of three elementary particles namely electrons, protons, and neutrons. Because of their masses, these particles exert gravitational forces on each other. However, in addition to gravitational force protons and electrons exert an exerted force is called electric force. Therefore, apart from their masses protons and electrons must possess some additional intrinsic property. The additional property of protons and electrons which gives rise to electric force between them is called electric charge. Electric charge is a scalar quantity. A proton possesses a positive charge +e while an electron possesses an equal negative charge -e where e= 1.6* 1/10 coulomb Electrostatic Induction Class 12 Notes We know that a body can be charged by rubbing it against some other suitable body. If another body is brought in contact with such a charged body, it also gets charged. It acquires

Keeping Quiet Poetic Devices, Summary, Questions and Answers

Keeping Quiet Poetic Devices Lines 1-10 For once - on this occasion only so much - very much exotic - attractive because unusual rush - great activity or hurry engines - machines Lines 11-20 green wars - fresh or new wars survivors - those who continue to live even after some danger Lines 21-31 confused - misunderstood Life is what it is about - What I say is concerned with life, not with death no truck with - no connection with single-minded - determine having an aim or purpose sadness - unhappy situation Lines 32-36 The earth can teach us - we can learn from what the earth does to itself When everything seems dead - winter everything withers and dies later proves to be alive - in spring when everything again comes alive Keeping Quiet Summary class 12 CBSE In this poem, the poet brings out the importance of quiet introspection. It can transform not only the life of an individual but also the face of the earth. The poet says that it does not need much time to look within and examine on