OpenStax University Physics/E&M/Electromagnetic Induction

For quiz at QB/d_cp2.13
Magnetic flux $$ \Phi_m=\int_S\vec B\cdot\hat n dA$$ Motional $$ \varepsilon=B\ell v$$ if $$\vec v\perp\vec B$$ Electromotive "force" (volts) $$\varepsilon=- N\tfrac{d\Phi_m}{dt}=\oint\vec E\cdot d\vec\ell$$ rotating coil $$ \varepsilon=NBA\omega\sin\omega t$$