Chapter 30205*P30.58From example 30.6, the upper sheet creates fieldBk=µ02Js±above it and 02Js−±kejbelow it. Consider apatch of the sheet of width wparallel to the zaxis andlength dparallel to the xaxis. The charge on it σwdpassesa point in time dv, so the current it constitutes is qtwdvd=and the linear current density is Jwvwvs==. Then themagnitude of the magnetic field created by the upper sheetis 120µσv. Similarly, the lower sheet in its motion towardthe right constitutes current toward the left. It createsmagnetic field 120v−±kabove it and 120v±kbelow it.++++––––dxyzwFIG. P30.58(b)Above both sheets and below both, their equal-magnitude fields add to zero .(a)Between the plates, their fields add to 00vv−=±kaway from you horizontally.(c)The upper plate exerts no force on itself. The field of the lower plate,
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This note was uploaded on 12/14/2011 for the course PHY 203 taught by Professor Staff during the Fall '11 term at Indiana State University .