A scientist just bought a very cool magnet, and would like to measure it’s strength. She takes a strip of copper with width 3.0cm, and a rectangular cross-section of 0.004m^2 and runs a current of 0.5A through it. She knows copper has a free charge density of 8.491× 10^28 m−3. She holds the magnet near the strip, and measures a voltage across the sides of the strips, and her voltmeter reads 11.2 nV- what is the strength of her magnet?
A scientist just bought a very cool magnet, and would like to measure it’s strength. She takes a strip of copper with width 3.0cm, and a rectangular cross-section of 0.004m^2 and runs a current of 0.5A through it. She knows copper has a free charge density of 8.491× 10^28 m−3. She holds the magnet near the strip, and measures a voltage across the sides of the strips, and her voltmeter reads 11.2 nV- what is the strength of her magnet?
Principles of Physics: A Calculus-Based Text
5th Edition
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Raymond A. Serway, John W. Jewett
Chapter19: Electric Forces And Electric Fields
Section: Chapter Questions
Problem 4CQ
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A scientist just bought a very cool magnet, and would like to measure it’s strength. She takes a strip
of copper with width 3.0cm, and a rectangular cross-section of 0.004m^2 and runs a current of 0.5A
through it. She knows copper has a free charge density of 8.491× 10^28 m−3. She holds the magnet
near the strip, and measures a voltage across the sides of the strips, and her voltmeter reads 11.2 nV-
what is the strength of her magnet?
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