10.4 Chapter summary
Previous
10.3 Faraday's law of electromagnetic induction
|
Next
End of chapter exercises
|
10.4 Chapter summary (ESBQ4)
-
Electromagnetism is the study of the properties and relationship between electric currents and magnetism.
-
A current-carrying conductor will produce a magnetic field around the conductor.
-
The direction of the magnetic field is found by using the Right Hand Rule.
-
Electromagnets are temporary magnets formed by current-carrying conductors.
- The magnetic flux through a surface is the product of the component of the magnetic field normal to the surface and the surface area, \(\phi = BA\cos(\theta)\).
-
Electromagnetic induction occurs when a changing magnetic field induces a voltage in a current-carrying conductor.
-
The magnitude of the induced emf is given by Faraday's law of electromagnetic induction: \(\mathcal{E}=-N\frac{\Delta\phi}{\Delta t}\)
Physical Quantities | ||
Quantity | Unit name | Unit symbol |
Induced emf (\(\mathcal{E}\)) | Volt | \(\text{V}\) |
Magnetic field (\(B\)) | Tesla | \(\text{T}\) |
Magnetic flux (\(\phi\)) | Weber | \(\text{Wb}\) |
Time (\(t\)) | seconds | \(\text{s}\) |
Previous
10.3 Faraday's law of electromagnetic induction
|
Table of Contents |
Next
End of chapter exercises
|