A horizontal wire is hung from the ceilingof a room by two massless strings. Thewire has a length of 0.20 m and a mass of0.080 kg. A uniform magnetic field ofmagnitude 0.070 T is directed from theceiling to the floor. When a current of I =42 A exists in the wire, the wire swingsupward and, at equilibrium, makes anangle o with respect to the vertical, as thedrawing shows. (a) Draw the free-bodydiagram showing the forces that act onthe wire. Account for each of the stringsseparately. (b) Find the angle p. (c) Findthe tension in each of the two strings.Nstring 2string 1 A piece of copper wire has a resistanceper unit length of 4.63 × 10/m. The wireis wound into a thin, flat coil of many turnsthat has a radius of 0.208 m. The ends ofthe wire are connected to a 12.0-Vbattery. Find the magnetic field strengthat the center of the coil.NumberiUnits>

Answered: A horizontal wire is hung from the…

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Question

A horizontal wire is hung from the ceiling
of a room by two massless strings. The
wire has a length of 0.20 m and a mass of
0.080 kg. A uniform magnetic field of
magnitude 0.070 T is directed from the
ceiling to the floor. When a current of I =
42 A exists in the wire, the wire swings
upward and, at equilibrium, makes an
angle o with respect to the vertical, as the
drawing shows. (a) Draw the free-body
diagram showing the forces that act on
the wire. Account for each of the strings
separately. (b) Find the angle p. (c) Find
the tension in each of the two strings.
N
string 2
string 1

A piece of copper wire has a resistance
per unit length of 4.63 × 10/m. The wire
is wound into a thin, flat coil of many turns
that has a radius of 0.208 m. The ends of
the wire are connected to a 12.0-V
battery. Find the magnetic field strength
at the center of the coil.
Number
i
Units
>

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$L e n g t h o f t h e w i r e, L = 0.20 m m a g n i t u d e o f m a g n e t i c f i e l d, B = 0.070 T c u r r e n t, I = 42 A m a s s o f t h e w i r e, m = 0.080 k g$

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