Lecture 27 Exam III

Lecture 27 Last Lecture The ideal Transformer Moving Conductor in a Static Magnetic Field

Lecture 27 The ideal Transformer properties:  =  I = 0 in the core. The magnetic flux is confined within the core I = ?, with applied voltage of V1and with RL V2, and I2=? Questions:

Lecture 27 Voltage transformer: Power relations: Why? Current transformer: Impedance transformer:

Lecture 27 Moving conductor in a static magnetic field:

Lecture 27 Another way to look at it:

Lecture 27 Today: The electromagnetic generator Moving conductor in a time varying magnetic field Displacement current

Lecture 27 The electromagnetic generator

Lecture 27 Moving conductor in a time-varying magnetic field Example:

Lecture 27 Displacement current Ampere’s law in static electric field Ampere’s law in time-varying electric field proof of Ampere’s law: Displacement current density

Lecture 27 Displacement current Ampere’s law in time-varying electric field Example: