Electromagnetism
In the early part of the 19th century electricity and magnetism were seen as two discrete areas of physics. With the experimental work of Michael Faraday, and later the mathematical analysis of James Clerk Maxwell, these two areas of physics were unified by the theory of electromagnetism.
What was discovered is that moving charges, in magnetic fields will experience a forces. In essence, this is due to the fact that moving charges generate magnetic fields which thereby interact with the magnetic fields that they are in.
This is the principle behind electric motors
What was also discovered was that electric charges experiencing changing magnetic fields, or changes of flux, would experience a force and thus an EMF generated.
This underpins the concept of electrical generation.
The following lessons examines the key physical principles and mathematical models that underpin these behaviours.
What was discovered is that moving charges, in magnetic fields will experience a forces. In essence, this is due to the fact that moving charges generate magnetic fields which thereby interact with the magnetic fields that they are in.
This is the principle behind electric motors
What was also discovered was that electric charges experiencing changing magnetic fields, or changes of flux, would experience a force and thus an EMF generated.
This underpins the concept of electrical generation.
The following lessons examines the key physical principles and mathematical models that underpin these behaviours.
0. Hand Rules Explained -
Before we continue it's an important to learn the hand rules that are used in studying electromagnetism.
Hand rules are 'tool's used to establish the correct relationship between the vectors of electrical current, force, EMF and magnetic field.
There are two in predominant use the first is Fleming's hand rules the second is the Palm rule. This video discusses both.
Both are equally valid, however it is best to consistently use one or the other.
Hand rules are 'tool's used to establish the correct relationship between the vectors of electrical current, force, EMF and magnetic field.
There are two in predominant use the first is Fleming's hand rules the second is the Palm rule. This video discusses both.
Both are equally valid, however it is best to consistently use one or the other.