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A rectangular 10.0 $\mathrm{cm}$ by 20.0 $\mathrm{cm}$ circuit carrying an 8.00 $\mathrm{A}$ current is oriented with its plane parallel to a uniform 0.750 T magnetic field (Figure 20.62$)$ . (a) Find the magnitude and direction of the magnetic force on each segment $(a b, b c,$ etc. $)$ of this circuit. Illustrate your answers with clear diagrams. (b) Find the magnitude of the net force on the entire circuit.

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Physics 101 Mechanics

Physics 102 Electricity and Magnetism

Chapter 20

Magnetic Field and Magnetic Force

Motion Along a Straight Line

Motion in 2d or 3d

Electric Charge and Electric Field

Gauss's Law

Current, Resistance, and Electromotive Force

Direct-Current Circuits

Magnetic Field and Magnetic Forces

Sources of Magnetic field

Electromagnetic Induction

Inductance

Cornell University

University of Michigan - Ann Arbor

University of Sheffield

McMaster University

Lectures

18:38

In physics, electric flux is a measure of the quantity of electric charge passing through a surface. It is used in the study of electromagnetic radiation. The SI unit of electric flux is the weber (symbol: Wb). The electric flux through a surface is calculated by dividing the electric charge passing through the surface by the area of the surface, and multiplying by the permittivity of free space (the permittivity of vacuum is used in the case of a vacuum). The electric flux through a closed surface is zero, by Gauss's law.

04:28

A magnetic field is a mathematical description of the magnetic influence of electric currents and magnetic materials. The magnetic field at any given point is specified by both a direction and a magnitude (or strength); as such it is a vector field. The term is used for two distinct but closely related fields denoted by the symbols B and H. The term "magnetic field" is often used to refer to the B field. In a vacuum, B and H are the same, whereas in a material medium, B is a component of H. In the latter case, H is the "magnetic field strength", and B is the "magnetic flux".

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we have a rectangle of Luke inside a uniformity. Creel. So this is a rectangular room. The current flows in this direction. We call this edge A, B, C and D. The uniformity field is in this direction. So we see field is perpendicular to maybe where it is Spangler thio BC It's again perpendicular to D. C. And they look to 80 then for body off the problem. The force on a B segment off the loop is given by I tell the sign that, uh and we see this force will be because since this angle is 90 degrees, then we can ride this force forced a B will be equal Thio eight times a report 10 times of 0.75 Tesla. All this gives us a force off one point to internalise that segment. While the force on a segment BC seems the field is fellatio. The segment BC Therefore, the angle is zero, giving us the force on that segment to be zero Similarly force on the segment CD, which is again a pentacle into the field will be one point to Newton. This will be out of the page out of the page out of the page means the direction off the force will be out of the page. Let's say this is a JJ screen and this will without of the beach while a be a forced A B here is into the bridge. So this is into the bridge. Full part B. Um, Then if you sum up these forces, one is into the page when another one is out of the page. Um, so these are the two directors, but in opposite direction. If we add these two actors for specters, then the resulting we get here easy zero. So the net force on this loop inside the media field will be a zero.

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