Answered: A wire having a mass per unit length of…

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter31: Gauss’s Law For Magnetism And Ampère’s Law

Section: Chapter Questions

Problem 49PQ

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Question

A wire having a mass per unit length of 0.500 g/cm carries a 2.00-A current horizontally to the south. What are (a) the direction and (b) the magnitude of the minimum magnetic field needed to lift this wire vertically upward?

Expert Solution

Step 1

The given values with suitable variables are listed below.

Here, m denotes the mass, L denotes the length, and I denotes the current.

Step 2

(a)

The direction of the current in the south, the direction of the magnetic field will be out of the page as per the right-hand rule.

So, the magnetic field’s direction is eastward.

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