# lecture22 - Biot-Savart Law, Ampres Law Text 30.2, 30.3...

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

Biot-Savart Law, Ampère’s Law Text 30.2, 30.3 •Fields and forces for straight wires •Ampère’s Law Practice: Chapter 30, problems 17, 21, 23, 25, 29. Parallel Long Wires: Parallel Long Wires: Find: Force on segment ab L I 1 d (Take I 1 = 20A, I 2 =30A, d=0.01m, L=1.5m) a b 2

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

View Full Document
Quiz Quiz I 1 2 The two long wires shown cross at right angles. How will the top (red) wire move when the current is turned on? For any closed path : Ampère’s Law (an integral theorem) encircled o path I µ = ds B “Circulation” of encircled current o × = B The current calculated this way flows through the surface bordered by the path. direction of integration positive current is out of the page through the shaded surface
C 1 2 3 I B Quiz: Long Straight Wire Quiz: Long Straight Wire On which of the curves C 1 , C 2 , and C 3 is path ds B i) smallest ii) largest ? Example: Long Straight Wire

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

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

## This note was uploaded on 12/03/2009 for the course CHEMISTRY 1E03 taught by Professor Britz during the Spring '09 term at McMaster University.

### Page1 / 6

lecture22 - Biot-Savart Law, Ampres Law Text 30.2, 30.3...

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online