School of Physics PHYS1004 Physics 1 (Environmental) – Semester 2, 2016 MODULE 1 OUTLINE: ELECTRICITY AND MAGNETISM Unit Description This module is one of 3 comprising PHYS 1004 Physics 1 (Environmental). This document describes details of this module and should be read in conjunction with the more general unit of study outline for PHYS 1004 Physics 1 (Environmental). General goals of this module This lecture module aims to develop the ideas of electricity and magnetism and illustrates their practical applications in the environmental and life sciences. The module investigates the concepts of charge, conservation of charge and the forces between charges. The module also investigates the nature of electric and magnetic fields, and how they can be produced and the interactions between them. MODULE DEFINITION & OBJECTIVES – ELECTRICITY & MAGNETISM (specified as references from the text: College Physics: A Strategic Approach by R.D. Knight, B. Jones & S. Field, 3rd edition published by Pearson/Addison Wesley, 2007.) LEARNING OBJECTIVES For each topic in this Module the Specific Objectives define what we expect you to learn and understand. “Understanding” a term or concept means that you should be able to: explain its meaning, interpret it correctly when you read or hear it, use it correctly in your own writing. apply it correctly to examples and problems. There is no easy road to learning. Your marks will depend on the work that you do. You should therefore read through and understand the sections of the textbook specified below, and work through the specified examples. You should then attempt as many as possible of the recommended questions, exercises and problems. Problem solving skills can only be acquired by practice. This module is also supported by some web-based material accessible through the eLearning page for this unit. MODULE CONTENT ELECTROSTATICS The electrostatics section of this module covers the ideas of electric charge, electric field, electric forces, electric potential, potential difference and capacitance. ELECTRIC CHARGE Chapter 20 Sections 20.1 – 20.3 Questions 1 to 10, 22, 26, 27 Problems 1 to 17 Specific Objectives -after studying this chapter you will be able to describe the basic properties of electric charge describe the difference between insulators and conductors describe ways of charging objects describe how charges interact and be able to apply Coulomb's Law ELECTRIC FIELDS Chapter 20 Questions Problems PHYS1004 Module 1 Outline Section 20.4 – 20.7 11 to 21, 23 to 25, 28 18 to 37 1 Copyright © 2016, The University of Sydney Specific Objectives -after studying this chapter you will be able to explain the concept of electric field and field lines calculate the electric field due to a point charge describe the effect of a conductor on an electric field calculate the force on a charge due to an electric field apply these concepts to the electric field around the heart and electrophoresis of DNA ELECTRIC POTENTIAL Chapter 21 Sections 21.1 – 21.6 Questions 1 to 8, 20, 21, 23, 31 Problems 1 to 24 Specific Objectives -after studying this chapter you will be able to understand the concepts of electric potential energy, electric potential and potential difference apply these concepts to a uniform electric field discuss the concept of equipotential surfaces discuss applications in electrocardiograph (ECG) CAPACITANCE Chapter 21 Sections 21.7 – 21.8 Questions 9 to 19, 21, 24 to 30 Problems 25 to 44 Specific Objectives -after studying this chapter you will be able to explain the concept of capacitance describe the use of a capacitor for storing charge calculate the capacitance of a parallel plate capacitor calculate the energy stored in a capacitor explain and calculate the effect of placing different dielectrics between the plates of a capacitor CURRENT AND CIRCUITS The Current and Circuits section of the module presents some basic concepts of electric circuits which you will have seen in the laboratory section of this course. In this section we will very briefly review these concepts and see how they relate to some applications of electricity in everyday life. CURRENT AND RESISTANCE Chapter 22 Sections 22.1 – 22.6 Questions 1 to 30 Problems 1 to 41 Specific Objectives -after studying this chapter you will be able to explain and apply the concepts of electric current and resistance calculate values of current, voltage and resistance using Ohm's Law calculate the electrical power dissipated in a circuit calculate resistance of a wire using the resistivity equation CIRCUITS Chapter 23 Sections 23.1 – 23.6, 23.8 – 23.9 Questions 1 to 28 Problems 1 to 35 Specific Objectives -after studying this chapter you will be able to explain the difference between real and ideal sources of EMF explain the concept of potential difference around a circuit calculate current, voltage and power in simple circuits discuss basic principles of electrical safety in the house apply what you have learnt about circuits, capacitance and resistance to signal propagation along a nerve cell. MAGNETISM The magnetism section of this module covers the ideas of magnetic fields, magnetic forces, magnetic induction and magnetic materials. MAGNETIC FIELDS & MAGNETISM OF MATTER Chapter 24 Sections 24.1 – 24.2 Questions 1 to 5, 28 Problems 44 to 46 PHYS1004 Module 1 Outline 2 Copyright © 2016, The University of Sydney Specific Objectives -after studying this chapter you will be able to explain the concept of magnetic field and magnetic field lines draw simple magnetic fields Explain the source of magnetism in permanent magnets discuss earth's magnetic field and its variation over time MAGNETIC FIELDS DUE TO CURRENTS Chapter 24 Sections 24.3 – 24.8 Questions 7 to 27, 29 to 35 Problems 1 to 43 Specific Objectives -after studying this chapter you will be able to describe and calculate the magnetic fields generated by currents calculate the force between current carrying wires calculate the magnetic field due to a long current carrying wire calculate the magnetic force on a charge describe the motion of a moving charged particle in a magnetic field describe how charged particles in trapped in the earth’s magnetic field cause aurora explain the operation of a mass spectrometer in terms of the force of charges in a magnetic field describe how magnetic resonance imaging (MRI) works INDUCTION AND INDUCTANCE Chapter 25 Sections 25.1 – 25.4 Questions 1 to 17, 26 to 30 Problems 1 to 24 Specific Objectives -after studying this chapter you will be able to explain and apply Faraday's Law explain and apply Lenz's Law discuss the energy transfers in the process of induction explain the concept of eddy currents PHYS1004 Module 1 Outline 3 Copyright © 2016, The University of Sydney