All of AQA Magnetic Fields in 47 Minutes

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In today's video we cover the whole of AQA Magnetic Fields and Electromagnetism including AC current and transformers. Although this video covers the AQA specification and specific wording it is totally applicable to all other exam boards such as OCR A, B, Edexcel, WJEC, Eduqas, CIE etc.

Chapters:
00:00 Force on a current carrying wire
03:08 Fleming's Left Hand Rule
03:41 Square Coil Motor Effect
07:07 Square Coil Net Moment
08:30 Example Problem - suspended wire
09:49 Magnetic Flux Density and the Tesla
11:03 Base Units of T
11:43 Force on a charged particle in a magnetic field
13:24 Circular Path of Charged Particles
16:07 Explain Example - why circular motion
16:35 Show Example - Kinetic Energy in a circular path
18:04 Path of Electric VS Magnetic Fields
19:02 Magnetic Flux and Flux Linkage
22:08 Max and Min Magnetic Flux
23:31 Magnetic Flux Example Question
24:42 Faraday's Law
26:24 Lenz's Law Explained
28:51 Induced EMF Example Question - plane flying
29:54 Derivation e=BLv
33:17 Example - straight conductor through a magnetic field
34:00 Example - rotating coil in a uniform magnetic field
35:59 OFF Spec - deriving E=BANwsin(wt) using differentiation
37:42 Peak Induced EMF formula and example
40:11 AC Currents
42:00 Example Question - AC Currents
43:33 Transformers - explanation
45:18 Ideal Transformer Equation
46:43 Efficiency of a Transformer
47:16 Inefficiencies and Eddy Currents