Physics 133 electromagnetism

Slides:



Advertisements
Similar presentations
Chapter 21 Electric Charge and Electric Field. Charles Allison © 2000 Question An  particle with a charge +2e and a mass of 4m p is on a collision course.
Advertisements

Coulomb’s Law. Coulomb’s Law… = the relationship among electrical forces, charges, and distance. It is like Newton’s law of gravity. But, unlike gravity,
Day 2 Electrical Charging & Coulomb’s Law. Objectives Charging by Conduction Charging by Induction Electroscopes Coulomb’s Law.
Electric Forces and Electric Fields. Properties of Electric Charges Two types of charges exist They are called positive and negative Named by Benjamin.
Nadiah Alenazi 1 Chapter 23 Electric Fields 23.1 Properties of Electric Charges 23.3 Coulomb ’ s Law 23.4 The Electric Field 23.6 Electric Field Lines.
Coulomb’s law. Objectives Describe the historical development of the concepts of electromagnetic force. Describe and calculate how the magnitude of the.
Dr. Jie ZouPHY Chapter 23 Electric fields (cont.)
Electric Fields Electric fields are created by electric charges. Any object with a charge has an electric field around it. Opposite charges attract each.
Coulomb's Law Lesson 2.
Electromagnetic Force
Book Reference : Pages & To look at the work of Charles Coulomb 2.To understand electric potential.
18.5 Coulomb's Law. The magnitude F of the electrostatic force exerted by one point charge on another point charge is directly proportional to the magnitudes.
Electrostatic Force Coulomb’s Law. Charges Two charges of the same type repel one another ++ The two charges will experience a FORCE pushing them apart.
Electric Charge and Electric Field
Forces and Fields Lesson 4
Fall 2004 Coulomb’s Law ECE 2317: Applied Electricity and Magnetism Prof. Valery Kalatsky Dept. of Electrical & Computer Engineering University of Houston.
Electrostatics.
Coulomb’s Law p. 538 in your book. Charged objects & electrical force Two electrically charged objects exert a force on each other. Opposite charges ATTRACT.
Electricity.
REVISION ELECTROSTATICS. The magnitude of the electrostatic force exerted by one point charge (Q1) on another point charge (Q2) is directly proportional.
Laws of Electric Charges. Electric Charge – electric charges exert forces on each other even when they are not in direct contact.
Chapter 20 Electrical Charge. Electrostatics The study of charge that can be –Collected –Held in one place Charged objects exert forces –Attractive (“unlike”
Physics 16/21 electromagnetism
Physics 2102 Lecture 04: WED 03 SEP
Reading Quiz 1. What is the SI unit of charge?
Coulomb’s Law.
Electric Force Holt: Chapter 17-2 Pages
Coulomb's Law Outcomes You will explain, qualitatively, the principles pertinent to Coulomb’s torsion balance Experiment You will apply Coulomb’s.
Physics Section 16.2 Apply Coulomb’s Law
Electrostatics Getting a Charge Out of Physics
ELEC 3105 Lecture 1 Coulomb.
Forces between charged bodies
Electricity and Magnetism Electric Fields: Coulomb’s Law
COULOMB’S LAW Coulomb’s Law – charges exert forces on each other and have been shown to be directly proportional to the magnitude of the charge and inversely.
COULOMB’S LAW The force between two charged objects is
Electric Force Unit 7.3.
DEFINITIONS: ELECTROSTATICS, ELECTRIC FIELDS and ELECTRIC CIRCUITS
By: Engr. Hinesh Kumar Lecturer IBT , LUMHS
GPhys 122 electricity Electric Field MARLON FLORES SACEDON.
Coulomb law.
Electric Force.
Coulomb’s Law.
Electric Fields Topic 6.2.
Going over Friday’s Quiz
Coulomb’s Law Pg
Electrostatics.
Electric Fields.
Warm Up: Get out your homework comparing Fe and Fg
Physics 16/21 electromagnetism
Section 23.3: Coulomb’s Law
Coulomb law.
Physics 133 electromagnetism
Physics 133 Electricity & magnetism
Section 2 Electric Force
Coulomb’s Law.
Electric Charge and Electric Field
REVISION ELECTROSTATICS.
University Physics: Waves and Electricity
Coulomb Law.
Electric fields recall and use Coulomb’s law in the form F = Q1Q2/4πε0r2 for the force between two point charges in free space or air. recall and use E.
Bell Work: Electric Fields
Force and Electric Fields
Physics 133 electromagnetism
Physics 16/21 Electromagnetism
Electrostatics Seo Physics.
Aim: How can we explain the forces that occur between two charges?
Coulombs Law.
Electric Force Holt: Chapter 17-2 Pages
Electric Force Unit 11.2.
Electrostatics Ch. 20.
Presentation transcript:

Physics 133 electromagnetism Electric Charge and Electric Force MARLON FLORES SACEDON

electromagnetism What is electromagnetism? A branch of physics which involves the study of the electromagnetic force, a type of physical interaction that occurs between electrically charged particles. The electromagnetic force usually shows electromagnetic fields, such as electric fields, magnetic fields, and light.

Law of electric charges Two positive charges or two negative charges repel each other. 2. A positive charge and a negative charge attract each other. 3. Uncharge material is always attracted by a charge material. + + + + + + + + - - - - - - - - - + - + + - + - + + + +

Coulomb’s law Coulomb's law, or Coulomb's inverse-square law, is a law of physics describing the electrostatic interaction between electrically charged particles. The law was first published in 1785 by French physicist Charles Augustin de Coulomb and was essential to the development of the theory of electromagnetism. Coulomb’s torsion balance

Coulomb’s law 𝐹=𝑘 𝑞 1 𝑞 2 𝑟 2 𝑞 2 𝐹 12 - 𝐹 21 𝑞 1 + 𝑟 𝐹∝ 𝑞 1 𝑞 2 𝑟 2 𝐹∝ 𝑞 1 𝑞 2 𝑟 2 𝐹= 1 4𝜋 𝜖 𝑜 ∙ 𝑞 1 𝑞 2 𝑟 2 𝐹=𝑘 𝑞 1 𝑞 2 𝑟 2 𝑞 2 𝐹 12 𝐹 21 𝐹 12 + 𝑞 1 =+25𝑛𝐶 - 𝑞 2 =−75𝑛𝐶 𝑟=3.0𝑐𝑚 + 𝑟 Where: 𝑘 is electric constant 𝑞 1 + 𝐹 21 (Coulomb’s law: force between two point charges) 𝑞 1 𝑎𝑛𝑑 𝑞 2 are interacting charges, in 𝐶𝑜𝑢𝑙 𝑜𝑟 𝐶 𝐹 12 =9𝑥 10 9 𝑁∙ 𝑚 2 𝐶 2 +25𝑛𝐶 −75𝑛𝐶 3𝑐𝑚 2 1 coul = 2.997 x 109 statC 𝜖 𝑜 =8.854𝑥 10 −12 𝐶 2 𝑁∙ 𝑚 2 +e=1.602𝑥 10 −19 𝐶 𝐹 12 =9𝑥 10 9 𝑁∙ 𝑚 2 𝐶 2 +25𝑥 10 −9 𝐶 −75𝑥 10 −9 𝐶 3𝑥 10 −2 𝑚 2 Permittivity of free space Problem: Two point charges, 𝑞 1 =+25𝑛𝐶 and 𝑞 2 =−75𝑛𝐶, are separated by a distance 𝑟=3.0𝑐𝑚. Find the magnitude and direction of the electric force (a) that 𝑞 1 exerts on 𝑞 2 and (b) that 𝑞 2 exerts on 𝑞 1 . 1 4𝜋 𝜖 𝑜 =𝑘=8.988𝑥 10 9 𝑁∙ 𝑚 2 𝐶 2 𝐹 12 =−0.01875𝑁 attractive force 𝐹 21 =9𝑥 10 9 𝑁∙ 𝑚 2 𝐶 2 −75𝑥 10 −9 𝐶 +25𝑥 10 −9 𝐶 3𝑥 10 −2 𝑚 2 𝑘=9𝑥 10 9 𝑁∙ 𝑚 2 𝐶 2 𝐹 21 =−0.01875𝑁 attractive force 𝑘=1 𝑑𝑦𝑛𝑒∙𝑐 𝑚 2 𝑠𝑡𝑎𝑡𝐶 2

Coulomb’s law Problem Two point charges are located on the +x-axis of a coordinate system: 𝑞 1 =1.0𝑛𝐶 is at 𝑥=+2.0𝑐𝑚, and 𝑞 2 =−3.0𝑛𝐶 is at 𝑥=+4.0𝑐𝑚. What is the total electric force exerted by 𝑞 1 and 𝑞 2 on a charge 𝑞 3 =5.0 𝑛𝐶 at 𝑥=0? ANS: 1.125E-4 repulsive, -8.4375E-5N attractive, 2.8125E-5N towards -x-axis

Problems/ assignment

Problems/ assignment

Problems/ assignment

Problems/ assignment

eNd