Electricity and Magnetism PHY211 Overview

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Questions and Answers

What is the first topic mentioned for the next lecture?

  • Coulomb’s Law (correct)
  • Magnetic Fields
  • The electric field
  • Electric Field Lines

Which of the following is NOT listed as an activity for Lect. 1?

  • Practical examples of Electric Fields
  • Exploration of Coulomb’s Law
  • Introductions to Electric Field Lines
  • Discussion on Electric Charge (correct)

Which resource is mentioned for further learning outside of the lecture?

  • Online quizzes
  • Academic journals
  • Textbook chapters
  • YouTube videos (correct)

In which format are the details of Lect. 1 primarily presented?

<p>Lecture notes (B)</p> Signup and view all the answers

What date is specified for the Lect. 1 documentation?

<p>September 28, 2024 (A)</p> Signup and view all the answers

What is one of the key subjects intended for discussion in Lect. 1?

<p>The electric field (D)</p> Signup and view all the answers

Flashcards

Coulomb's Law

Describes the force between two electrically charged objects.

Electric Field

A region of space where an electric charge experiences a force.

Electric Field Lines

Visual representations of the electric field's direction and strength.

Next lecture topics

Coulomb's Law, Electric Field, and Electric Field Lines

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Lecture date

September 28, 2024

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Lecture 1

First lecture of a course likely physics.

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Study Notes

Course Information

  • Course name: Electricity and Magnetism (PHY211)
  • Course offered by: Basic Science
  • Fall 2024 semester
  • 3 credit hours

Learning Strategy

  • Interactive learning approach
  • Student preparation for lectures and open discussions
  • Completion of quizzes, assignments, and presentations
  • Flipped classroom method for some lectures

General Rules

  • Lectures are 2 hours long
  • Break after the first hour
  • Second half of lecture is divided in half: lecture and activity
  • No cell phones during lectures

Grading

  • Assessment is not entirely based on exams.
  • Participation Quizzes and Assignments: 20%
  • Midterm Exam: 10%
  • Lab Book Reports: 15%
  • Practical Exam: 15%
  • Final Exam: 40%
  • Total points: 100%

Course Content (Chapters)

  • Chapter 1: Coulomb's Law
  • Chapter 2: Potential difference
  • Chapter 3: Ohm's Law
  • Chapter 4: Work and energy
  • Chapter 5: Kirchhoff's Law
  • Chapter 6: Magnetism
  • Chapter 7: Faraday's Law
  • Chapter 8: Wave motion
  • Chapter 9: Geometrical Optics
  • Chapter 10: Optical Instruments

Chapter 1: Electric Charge and Coulomb's Law

  • Lecture Layout:

    • Electric charges
    • Conductors and Insulators
    • Charging
    • Activity
  • Electric Charge:

    • Measurable quantity of matter, with symbols q or Q, units are in Coulombs (C).
    • Quantized; comes in units of e = 1.6 x 10-19 C
    • Elementary particles within atoms
      • Protons: +e = +1.6 x 10-19 C
      • Neutrons: Uncharged
      • Electrons: -e = -1.6x 10-19 C
    • Neutral bodies: equal amounts of positive and negative charges
    • Charged bodies: unequal amounts, more of one type
    • Like charges repel, unlike charges attract
  • Charging by Friction

    • Rubbing transfers electrons between objects
    • Example: Glass rod-silk, plastic rod-fur

Chapter 2: Insulators and Conductors

  • Electrical Conductors: Materials with free electrons (electrons can move freely).
    • When charged, charge distributes across the entire surface
    • Example: Copper
  • Electrical Insulators: Materials where all electrons are tightly bound to atoms (electrons cannot move freely).
    • Charge stays localized when charged
    • Example: Plastic
  • Semi-conductors: Materials with electrical properties between conductors and insulators.
    • Resistivity increases with decreasing temperature
    • Affected by impurities and junctions and has variable resistance, sensitive to heat and light (current flows more easily in one direction).
    • Example: Silicon, Germanium

Chapter 3; Charging (methods)

  • Charging by Conduction: Sharing charge by direct contact between charged and neutral objects.
  • Charging by Induction: Charged object influences another object without contact. This creates a charge separation but doesnt necessarily transfer any charge. Often this involves a grounded conductor

Activity

  • A charged rod attracts bits of dry cork dust that jump away after touching.
  • A charged insulator can be discharged by passing it near a flame (heat dislodges electrons).
  • Why a coin rubbed between fingers doesn't become charged.

Next Lecture Topics

  • Coulomb's Law
  • Electric Field
  • Electric Field Lines

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Lecture 1-PHY211-Fall-2024 PDF

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