1 / 5

3/24/06 Faraday’s Law and Lenz’s Rule HW#6 due today.

3/24/06 Faraday’s Law and Lenz’s Rule HW#6 due today. Monday’s Reading: Sec. 9.2: Musical Instruments (pp. 274 – 285) Reading Quiz up later today. Magnetic Flux Induced Currents Eddy Currents CHANGING Magnetic Flux FIGHT THE FLUX CHANGE.

dougal
Download Presentation

3/24/06 Faraday’s Law and Lenz’s Rule HW#6 due today.

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. 3/24/06 Faraday’s Law and Lenz’s Rule HW#6 due today. Monday’s Reading: Sec. 9.2: Musical Instruments (pp. 274 – 285) Reading Quiz up later today

  2. Magnetic Flux Induced Currents Eddy Currents CHANGING Magnetic Flux FIGHT THE FLUX CHANGE

  3. A metal ring drops downward into and then through a region of magnetic field pointing into the page as shown. The magnetic field is uniform and points into the page in the boxed region, and is zero outside the boxed region. For each of the following cases, consider the following choices for the direction of the current in the ring: v X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X (b) (a) X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X (c) (d)

  4. A bar magnet is released above a circular loop of wire as shown, and falls through the loop. The loop is held fixed. Consider the following directions, as viewed when looking at the loop from above: N S N S Bird’s eye view N a) What is the direction of the induced current in the wire loop, while the bar magnet is falling towards the loop from above? b) What is the direction of the induced current in the wire loop, while the bar magnet is falling away from the loop from below?

  5. Example: Applying Lenz’s Law – Fight the Flux Change! A solenoid is used to create a uniform magnetic field that points into the page. A wire loop of area A is in the magnetic field, as shown. For each of the following cases, choose one of the following for the direction of the induced current in the loop: x x x x x x x x x x x x x x x x x x x x • The loop is rotated so that the top of the loop comes out of the page and the bottom of the loop goes into the page. • The magnetic field is increased. • e) The magnetic field direction is reversed. • The loop is moved to the left, staying in • the B field. • The loop is crushed to a smaller area.

More Related