## PHYS2340 Electromagnetism (Geophysics)

### 10 creditsClass Size: 20

Module manager: Dr Michael Ries
Email: M.E.Ries@leeds.ac.uk

Taught: Semester 1 (Sep to Jan) View Timetable

Year running 2023/24

### This module is mutually exclusive with

 PHYS2300 Physics 3- Fields and Energy PHYS2350 Electromagnetism (Joint Honours)

This module is not approved as a discovery module

### Objectives

By the end of the module you should be able to:
- use the integral versions of Maxwell's equations to explain the concepts of electric fields and potentials, magnetic fields and magnetic induction, and to calculate these fields in cases of simple symmetric geometry.
- calculate the force on a moving charge in an electric and magnetic field and the force on a current carrying conductor, and to calculate the energy stored in electric and magnetic fields.
- analyse simple AC circuits containing resistors, capacitors and inductors.
- state Maxwell's equations in both integral and differential form and discuss their derivation from the physical laws of electromagnetism, in vacuo and in dielectric and magnetic media.

Learning outcomes
Students will be able to demonstrate knowledge, understanding and application of:
1. Electric and Magnetic fields, Biot-Savart law for a point charge and Lorentz force;
2. Maxwell’s Equations both “microscopic” and “macroscopic”;
3. Electric and Magnetic potential, Poisson’s equation;
4. Wave equation, EM waves, EM Spectrum and the Poynting vector;
5. AC circuits (LCR), complex impedance, transients, resonance.

Skills outcomes
Problem solving in electromagnetism

### Syllabus

Electric and Magnetic Fields:
E field, Gauss; B field, Ampere; Magnetic induction, Faraday, Lenz.
AC currents:
in resistors inductors and capacitors, LCR circuits, Complex impedance, Resonance.
Maxwell's Equations:
(A) In vacuo with charges: Poisson; Magnetostatics, Displacement current, Maxwell's extension of Ampere's law; EM waves in vacuo, Energy and momentum in EM waves, EM spectrum.
(B) In dielectric and magnetic media - Polarization and local fields; Magnetization; Summary of Maxwell's equations.

### Teaching methods

 Delivery type Number Length hours Student hours Lecture 33 1.00 33.00 Private study hours 67.00 Total Contact hours 33.00 Total hours (100hr per 10 credits) 100.00

Solving problems

### Methods of assessment

Coursework
 Assessment type Notes % of formal assessment In-course Assessment Regular Coursework 20.00 Total percentage (Assessment Coursework) 20.00

Resit will be in standard exam format.

Exams
 Exam type Exam duration % of formal assessment Standard exam (closed essays, MCQs etc) 1 hr 30 mins 80.00 Total percentage (Assessment Exams) 80.00

Students will have to complete an in-person exam at the end of the module. This will take place during the examinations period at the end of the semester and will be time bound.