Lecture20 - Lecture 20 Chapter 21 Magnetic Force Hall Effect A flow of charge carriers creates a current If the current is placed in a magnetic

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon

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

View Full DocumentRight Arrow Icon
2 What is the magnitude of the Hall effect in a metal? Monovalent metals: n is the same as # of atoms per m 3 Some metals: n is larger than # of atoms per m 3 Hall Effect in a Metal B=1T 5mm 0.1mm I=20A What is V Hall for the shown copper ribbon? n Cu =8.4 . 10 28 m 3 What is potential difference along 5 mm of copper ribbon to sustain current 20 A? Cu = 6 . 10 7 (A/m 2 )/(V/m 2 ) Exercise Metal is in static equilibrium: but E 0 inside! What is V ? Currents Due to Magnetic Forces Static equilibrium: vB E = vBL EL V = = Δ How much force do we need to apply to keep the bar moving at constant speed?
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 04/23/2011 for the course PHYS 272 taught by Professor K during the Spring '07 term at Purdue University-West Lafayette.

Page1 / 6

Lecture20 - Lecture 20 Chapter 21 Magnetic Force Hall Effect A flow of charge carriers creates a current If the current is placed in a magnetic

This preview shows document pages 1 - 3. Sign up to view the full document.

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