Electrostatics - Creative Technology 9 PDF

CREATIVE TECHNOLOGY 9 ELECTRIC CHARGES Basic Electronics and Power Suupply TYPES OF ELECTRICITY  STATIC CURRENT  STATIC ELECTRICITY ELECTRO STATICS ELECTROSTATICS DEFINITION It is the study of electromagnetic phenomena that occur when there are no moving charges.  CURRENT ELECTRICITY  ELE...

CREATIVE TECHNOLOGY 9 ELECTRIC CHARGES Basic Electronics and Power Suupply TYPES OF ELECTRICITY  STATIC CURRENT  STATIC ELECTRICITY ELECTRO STATICS ELECTROSTATICS DEFINITION It is the study of electromagnetic phenomena that occur when there are no moving charges.  CURRENT ELECTRICITY  ELECTRO DYNAMICS ELECTRODYNAMICS DEFINITION It is the study of the dynamics of electric charges and the electromagnetic forces that arise as a result.  CREATIVE TECHNOLOGY 9 ELECTRIC CHARGES Mr. Feliph Angelo S. Calunod  Explain the origin of charges on LESSON the basis of the atomic structure. OBJECTIVES Explain the conservation and AT THE END OF THE WEEK, THE STUDENTS ARE EXPECTED TO: quantization of charges. Explain the conduction and induction as means of electrification. Calunod | January 2023  State and apply Coulomb’s law in LESSON solving numerical problems. OBJECTIVES Compare and contrast electric AT THE END OF THE WEEK, THE STUDENTS ARE EXPECTED TO: force from gravitational force. Calunod | January 2023  ZEUS Greek God of the Sky DURING THE ANCIENT JUPITER TIMES Roman God of the Sky HISTORICAL DEVELOPMENT THOR Norse God of Thunder  THE ORIGIN OF ELECTRICITY LODESTONE / AMBER THALES OF MAGNETITE A translucent yellowish- MILETUS A naturally-magnetized brown fossil resin The first recorded rock investigator of such ability of amber  THE ORIGIN OF ELECTRICITY WILLIAM GILBERT ELECTRICS STATIC He found out that many other The name given to the ELECTRICITY substances when rubbed substances that have the It results from an imbalance against another substance same ability as amber between negative and positive have this ability of amber. charges in objects.  BENJAMIN FRANKLIN A major figure in the American Enligtenment IN 1752 and the history of Physics for his discoveries and theories regarding electricity HISTORICAL DEVELOPMENT KITE EXPERIMENT Franklin's experiment demonstrated the connection between lightning and electricity. ELECTRIC CHARGE It is the basic property of matter carried by some elementary particles that governs how the particles are affected by an electric or magnetic field.  Properties of ELECTRIC CHARGE Two kinds of charges occur in nature. Like charges repel. Opposite charges attract.  Properties of ELECTRIC CHARGE The SI unit of charge, q, is COULOMB, abbreviated as C.  Properties of ELECTRIC CHARGE Charge is quantized. Any positive or negative charge q that can be detected can be written as where n may be any integer referring to the number of electrons and e is 1.602 x 10^-19 C.  Properties of ELECTRIC CHARGE Help me Get Over: How many electrons must be removed from an object for it to have a charge of 1 C?  Properties of ELECTRIC CHARGE TRY THIS Sunod sa Galaw: A comb rubbed with the hair several times acquires a net charge of -0.96 C. Did the comb gain or lose electrons? How many electrons were transferred?  TRY THIS ADD UP A body has an initial charge of 15 C. When it comes in contact with a charged body, it loses 5 x 10^ 19 electrons. What is the final charge of the body? PROPERTIES OF CHARGES  Properties of ELECTRIC CHARGE Charge is conserved. No electron is destroyed nor created during the transferring of charges. THE TRIBOELECTRIC SERIES It is a list of materials that indicates by position on the list which materials are capable of acquiring a positive or negative charge and the relative strength of those charges.  I Saw the Sign: Which of the given objects will be positively-charged when rubbed against each other? Human Hair or Rubber THE TRIBOELECTRIC SERIES  I Saw the Sign: Which of the given objects will be positively-charged when rubbed against each other? Human Hair or Rubber THE TRIBOELECTRIC SERIES  I Saw the Sign: Which of the given objects will be positively-charged when rubbed against each other? Nylon or PVC Pipe THE TRIBOELECTRIC SERIES  I Saw the Sign: Which of the given objects will be positively-charged when rubbed against each other? Nylon or PVC Pipe THE TRIBOELECTRIC SERIES  I Saw the Sign: Which of the given objects will be negatively-charged when rubbed against each other? Leather or Styrofoam THE TRIBOELECTRIC SERIES  I Saw the Sign: Which of the given objects will be negatively-charged when rubbed against each other? Leather or Styrofoam THE TRIBOELECTRIC SERIES  TRY THIS Kung Mawawala Ka: When you rub your dry hands with a silk handkerchief, which will lose electrons and which will gain electrons? Explain your answer. THE TRIBOELECTRIC SERIES  CONDUCTORS AND INSULATORS A conductor is a material which allows charges to flow readily. Metals are good conductors because they have plenty of free electrons that can move about the material.  CONDUCTORS AND INSULATORS An insulator is a material that resists the flow of charges. Rubber, plastic, mica, paper, glass, and air are insulators.  CONDUCTORS AND INSULATORS A semiconductor is an intermediate between a conductor and an insulator. Semiconductor is an insulator in its pure crystalline form. The addition if atoms of different element in very small amount, that is, one part per million or even less makes it a conductor.  CONDUCTORS AND INSULATORS A superconductor offers practically no resistance to flow of charges below some critical temperatures. A Dutch physicist Heike Kamerlingh Onnes discovered superconductivity in 1911 by cooling mercury to a temperature of about 4K.  PROCESS OF CHARGING Conduction is charging by contact between the neutral body and the charging body.  PROCESS OF CHARGING Conduction is charging by contact between the neutral body and the charging body.  PROCESS OF CHARGING The process of induction does not involve contact between the neutral body and the charging body. The neutral body is simply brought near the charging body.  PROCESS OF CHARGING The process of induction does not involve contact between the neutral body and the charging body. The neutral body is simply brought near the charging body.  PROCESS OF CHARGING The process of induction does not involve contact between the neutral body and the charging body. The neutral body is simply brought near the charging body.  ELECTROSCOPE An electroscope is a device for determining the kind of chrage of a body. A common type of electroscope is the gold leaf electroscope.  ELECTROSCOPE This consists of a glass case with an insulating stopper through which a metal rod passes. A metal cap is soldered to the top end of the rod: Two thin leaves of gold case is used to protect the leaves from air current and dust. ELECTROSCOPE