{"id":2229,"date":"2023-10-02T11:11:51","date_gmt":"2023-10-02T11:11:51","guid":{"rendered":"http:\/\/localhost\/ecole9ja\/?p=2229"},"modified":"2023-10-02T11:23:36","modified_gmt":"2023-10-02T11:23:36","slug":"week-6-ss1-second-term-physics-notes","status":"publish","type":"post","link":"https:\/\/ecolebooks.com\/nigeria\/posts\/week-6-ss1-second-term-physics-notes\/","title":{"rendered":"Week 6 &#8211; SS1 Second Term Physics Notes"},"content":{"rendered":"<p><strong>WEEK SIX<\/strong><br \/>\n\t\t<strong>TOPIC: ELECTRIC CHARGES\u2192 Production, Types, Distribution and Storage<br \/>\n<\/strong><strong>CONTENT<br \/>\n<\/strong><\/p>\n<ul>\n<li>\n<div>Production of Charges\n<\/div>\n<\/li>\n<li>\n<div>Types of Charges\n<\/div>\n<\/li>\n<li>\n<div>Distribution of Charges\n<\/div>\n<\/li>\n<li>\n<div>Storage of Charges\n<\/div>\n<p>\u00a0<\/li>\n<li>\n<div><strong>Production of Charges<br \/>\n<\/strong><\/div>\n<\/li>\n<\/ul>\n<p>If a plastic pen is rub vigorously on the hair or on a coat and it is hold near a very small piece of paper, the paper will be attracted by the pen. Some substances are found to poses the ability to attract light objects once they are rubbed. The light object as well as the rubbed material are said to be charged or electrified with static electricity.<\/p>\n<p>\u00a0Electrostatics is the study of charges at rest. It is a type of electricity that does not move from one point to another in the substance in which it is produced.<\/p>\n<p>\u00a0<\/p>\n<ul>\n<li>\n<div><strong>Types of Charges<br \/>\n<\/strong><\/div>\n<p>There are two types of charges \u2013 positive and negative charges.\n<\/li>\n<\/ul>\n<p>Positive charge is obtained when a glass rod is rubbed with silk, or cellulose acetate<br \/>\nwith silk, while negative charge is obtained when an ebonite rod is rubbed with fur or polythene with fur.<\/p>\n<p>\u00a0These two rods with positive and negative electrification attract each other when brought close. Repulsion occurs if two similar rods are brought close.<\/p>\n<p>\u00a0<strong>FUNDAMENTAL LAW OF ELECTROSTATICS<br \/>\n<\/strong>The law states that like charges repel, unlike charges attract.<\/p>\n<p>\u00a0<strong>CONDUCTORS AND INSULATORS<br \/>\n<\/strong>Conductors are materials that allow electrons to pass through them easily. Examples of conductors are metals, damp air, graphite, acids, salt solutions, the earth, and the human body.<br \/>\nInsulators are materials that do not allow electrons to pass through them easily. Examples of insulators are plastic, polythene, Bakelite, ebonite, paper, dry hair, silk, oils, glass, sulphur and wood.<\/p>\n<p>\u00a0<strong>EVALUATION<br \/>\n<\/strong><\/p>\n<ol>\n<li>\n<div>State the fundamental law of electrostatic.\n<\/div>\n<\/li>\n<li>\n<div>What is electrostatic?\n<\/div>\n<p>\u00a0<\/li>\n<\/ol>\n<ul>\n<li>\n<div><strong>Distribution of Charges<br \/>\n<\/strong><\/div>\n<\/li>\n<\/ul>\n<p><img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100223_1111_Week6SS1Se1.png\" alt=\"\"\/>Experimental works have shown that charges are distributed where there is a sharp curve. The densities of these charges are greater at the surface of sharp curve. The charge per unit area of a charged surface is called surface density.<\/p>\n<p>\u00a0<br \/>\n\u00a0<br \/>\n\u00a0<br \/>\n\u00a0<br \/>\n\u00a0<em>Fig. 2.3 Charge Distribution is greater at the edge (sharp edge)<br \/>\n<\/em><\/p>\n<ul>\n<li>\n<div><strong>Storage of Charges<br \/>\n<\/strong><\/div>\n<\/li>\n<\/ul>\n<p>The electrophorus is a device for transferring and storing charges. It produces electric charges by electrostatic induction. Another device for the storage of electric charges is the capacitor<\/p>\n<p>\u00a0<strong>EVALUATION<br \/>\n<\/strong><\/p>\n<ol>\n<li>\n<div>With the aid of a diagram, explain charge distribution.\n<\/div>\n<\/li>\n<li>\n<div>Name two devices that can store charge.\n<\/div>\n<p>\u00a0<strong>Reading Assignment<br \/>\n<\/strong>New School Physics pg 56 \u2013 58, 63 \u2013 65<\/p>\n<p>\u00a0<strong>WEEKEND ASSIGNMENT<br \/>\n<\/strong><\/li>\n<li>\n<div>Electophorus and capacitor can store charges A. true B. false C. cannot say\n<\/div>\n<p>D. none of the above\n<\/li>\n<li>\n<div>When an ebonite rod is rub with fur, the fur becomes A. positively charge\n<\/div>\n<p>B. negatively charge C. neutral D. none of the above\n<\/li>\n<li>\n<div>The ebonite rod in question 2 becomes A. positively charge B. negatively charge C. neutral D. none of the above\n<\/div>\n<\/li>\n<li>\n<div>Like charges A. attract B. repel C. disappear D. evaporate\n<\/div>\n<\/li>\n<li>\n<div>Charges are unusually concentrated at places where the surface is \u2026\u2026\u2026\u2026.\n<\/div>\n<p>A.  straight B. sharply curved C. oval in shape D. none of the above<\/p>\n<p>\u00a0<strong>THEORY<br \/>\n<\/strong><\/li>\n<li>\n<div>State the fundamental law of electrostatic.\n<\/div>\n<\/li>\n<li>\n<div>What is electrostatic?\n<\/div>\n<p>\t\t\t\t\u00a0<\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"<p>WEEK SIX TOPIC: ELECTRIC CHARGES\u2192 Production, Types, Distribution and Storage CONTENT Production of Charges Types&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1,191],"tags":[],"class_list":["post-2229","post","type-post","status-publish","format-standard","hentry","category-posts","category-second-term-ss1-physics"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/ecolebooks.com\/nigeria\/wp-json\/wp\/v2\/posts\/2229","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ecolebooks.com\/nigeria\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ecolebooks.com\/nigeria\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ecolebooks.com\/nigeria\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ecolebooks.com\/nigeria\/wp-json\/wp\/v2\/comments?post=2229"}],"version-history":[{"count":1,"href":"https:\/\/ecolebooks.com\/nigeria\/wp-json\/wp\/v2\/posts\/2229\/revisions"}],"predecessor-version":[{"id":2230,"href":"https:\/\/ecolebooks.com\/nigeria\/wp-json\/wp\/v2\/posts\/2229\/revisions\/2230"}],"wp:attachment":[{"href":"https:\/\/ecolebooks.com\/nigeria\/wp-json\/wp\/v2\/media?parent=2229"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ecolebooks.com\/nigeria\/wp-json\/wp\/v2\/categories?post=2229"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ecolebooks.com\/nigeria\/wp-json\/wp\/v2\/tags?post=2229"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}