{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

PY208N-Lecture-22 - 29-7 A Changing Magnetic Flux Produces...

Info icon This preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
1 . A changing magnetic flux induces an electric field; this is a generalization of Faraday’s law. The electric field will exist regardless of whether there are any conductors around: 29-7 A Changing Magnetic Flux Produces an Electric Field Example 29-14: E produced by changing A magnetic field B between the pole faces of an electromagnet is nearly uniform at any instant over a circular area of radius r 0 . The current in the windings of the electromagnet is increasing in time so that B changes in time at a constant rate d B / dt at each point. Beyond the circular region ( r > r 0 ), we assume B = 0 at all times. Determine the electric field E at any point P a distance r from the center of the circular area due to the changing B . 29-7 A Changing Magnetic Flux Produces an Electric Field B uuur uuur E uuur B uuur B uuur B uuur uuur
Image of page 1

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon