Faraday's Law
Source lecture(s): SC134 Lec11-13
Physical Meaning
Changing magnetic flux induces EMF.
Variable Definitions
| Symbol | Meaning |
|---|---|
| \(\mathcal{E}\) | induced EMF |
| \(\Phi_B\) | magnetic flux |
| \(N\) | number of turns |
Assumptions
Quasi-static (neglect radiation); \(N\) turns linked by same flux.
Derivation
Empirical law; minus sign from Lenz's law.
Applications
Generators, transformers, induction stoves, guitar pickups.
Connections to Other Equations
- magnetic-flux
- maxwell-equations