Question

L, N wires TO00000000000000000 Two long sheets of width L = 4.4 cm each contain N = 440 closely-packed wires car- rying current I = 19 UA in opposite direc- tions. The sheets are separated by a distance h = 192 m. Letting the positive r-direction be to the right, calculate the magnitude of B at point A located y = 26 um above the exact center of the lower sheet. Answer in units of T.

Answer 1

solution: Number of wires per uunt length Y = 4402 4.4x1 = 104 winerym Current in each wire I = 19 M.A. aurrent per unit width K= N t = 19x10² Alm h=192 um ,y=26um Taut = 2 dB so ý dx=y see2o do - x (-2,0) E de (a,0) dB = dB (- cost i sintý) aurrent through the element dI = K dx del = ModIn sino = - 2T (x² + y²) (x2+y?)? o varies from -8 to +8 where Tau &= Be= Sd Bx = -1 dB Co 2 9 ta 2 T (x² + y 2 ) 3/2

to y 2 sezodo Tuo kl y seese it Bu : - (none) 7 modo che la versions) bo hok Cos o do X - adx pays. Suraya te aps pe r yig te verlore) My = - Centre is somente a Chery (60691-0)-0 anzo see ode y see 30 using the above formulas, Netmagnetic field at A Boyun ) c )+ 4015 (3) mayo K= 19x102 Alm, L= 4.4cm, y = 260m h=192 um BA=0.00338 T BAS