Lec17-2-LPN

Lec17-2-LPN - ture 17-1 ture Amperes Law in Magnetostatics...

Info iconThis preview shows pages 1–5. Sign up to view the full content.

View Full Document Right Arrow Icon
cture 17- cture 17- 1 Ampere’s Law in Magnetostatics The path integral of the dot product of magnetic field and unit vector along a closed loop, Amperian loop , is proportional to the net current encircled by the loop, Choosing a direction of integration. A current is positive if it flows along the RHR normal direction of the Amperian loop, as defined by the direction of integration. Biot-Savart’s Law can be used to derive another relation: Ampere’s Law
Background image of page 1

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

View Full DocumentRight Arrow Icon
cture 17- cture 17- 2 Magnetization and “Bound” Current in Matter Strong externally applied field B app aligns the magnetic moments in matter. (M) Magnetization
Background image of page 2
cture 17- cture 17- 3 Hysteresis for a Ferromagnet Lack of retraceability shown is called hysteresis. Memory in magnetic disk and tape Alignment of magnetic domains retained in rock (cf. lodestones) Area enclosed in hysteresis loop μ Energy loss per unit volume hard magnet: broad hysteresis loop (hard to demagnetize, large energy loss, high memory) soft magnet: narrow hysteresis loop (easy to demagnetize,…)
Background image of page 3

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

View Full DocumentRight Arrow Icon
cture 17- cture 17- 4 BRIDGE OF NAILS
Background image of page 4
Image of page 5
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 16

Lec17-2-LPN - ture 17-1 ture Amperes Law in Magnetostatics...

This preview shows document pages 1 - 5. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online