Electric Charge: Physics Lesson, Conductors & Insulators - PDF
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Sumulong College of Arts and Sciences
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Summary
This document covers the basics of electric charge, introducing essential concepts from physics such as electromagnetism. It uses a question-and-answer format to guide the reader through topics including insulators, conductors, and methods of charging, along with experiments to understand the science in practice.
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Guide a. b. Questions: What word is revealed by the pictures? What is the significance of electricity in our life? c. Are you familiar with the history of electricity? Activity A. Watch a short video that explains the discovery of electricity....
Guide a. b. Questions: What word is revealed by the pictures? What is the significance of electricity in our life? c. Are you familiar with the history of electricity? Activity A. Watch a short video that explains the discovery of electricity. B. On a yellow paper, trace the history of electricity based on what you have learned. Use bullet points. C. Construct an accordion timeline using your data E L E C T R I C I T Y ELECTRICIT Y Derived from the Greek word for amber which is elektron, coined by Thales, a Greek philosopher. First recorded by ancient Greeks back in 500 years BC when they witnessed how polishing amber can temporarily attract bits of straw. OBJECTIVES Describe using a diagram charging by rubbing and charging by induction Explain the role of electron transfer in electrostatic charging by rubbing Describe experiments to show electrostatic charging by induction ELECTRO MAGNETI SM A branch of Physics that deals with the electromagnetic force that occurs between electrically charged particles. Here starts the lesson! ELECTROMAGN ETIC FORCE MAGNETIC FORCE Attraction or repulsion that One of the fundamental arises between electrically forces of nature which charged particles because of acts upon all charged their motion. particles. ELECTRIC ELECTROST FORCE Acts between all charged ATICS It is the study of electric particles, whether or not phenomena due to charges that they're moving. are temporarily stationary. 0 1 ELECTRIC CHARGE, INSULATORS, CONDUCTORS AND INDUCED CHARGES ELECTRIC CHARGE It can either be positive (+) or negative (-). The physical quantity which is carried by some The sum of identical positive elementary particles that and negative quantities is governs how the particles zero (0). This is what it are affected by an electric means to be electrically or magnetic field. neutral. (britannica.com) (physics.info) RULES OF ACTION 2. Opposite charges attract. 1. Like charges repel. 3. Neutral object and charged object attract one another. METHODS OF CHARGING 1. Friction - Electrons transfer from a neutral object to another via rubbing due to the difference in the objects’ capacity to loose (conduction) and hold electrons (insulation). ELECTROSTA TIC SERIES A list of materials with increasing electron affinity (capacity to hold onto or gain more electrons). METHODS OF CHARGING 2. Conduction - transfer of electrons from charged to neutral object via direct contact. CONDUCTORS INSULATORS NOTE THAT… THE MORE AN OBJECT IS CONDUCTIVE, THE EASIER AND STRONGER IS THE DEFLECTION. ELECTROSCOP E A scientific device that is used to detect the presence of an electric charge on a body. (BYJU) METHODS OF CHARGING 3. Induction - Electrons react to the electric field of another object without direct contact. INDUCED CHARGE - A charged caused by an indirect contact with a charged object or material. GROUNDING - provides a measure of safety against electric shocks by acting as a safety line to redirect electric current in the event of short circuits.
