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File Edt View History Bookmarks People Window Help Secure https: oblemiD-8801 19798offset prev CH23 H Problem 29 41 e previous 15a 15of20 ins Problem 29.41 Part A At what point on the r-exis is the magnetic feld zero fthe two curnents ane in the same drection? Express your answer to two significant figures and inslude the appropriate units A long wire canrying a 44 A cument porpendiouler 3.0 A cument intersects the z-axis at z +22em 0? Value Units Part B At whal point on the r-axis is the magnetic feld zero itthe two currents are in opposte directione? Express your answer to tws signifficant figures and inclde the appropriate units 7.Prob Value Units 19. Wy Anewers Give Up 20. Prob

Explanation / Answer

at x1=-2.2 cm

current in long wire1 is I1=4.4 A

and

at x1=+2.2 cm

current in long wire2 is I2=3 A

distance between two wire is r=4.4 cm

A)

magnetic field due to long currnt wire,

B=uo*I/2pi*x

let

at a distance of x from wire1 the net magnetic feild is zero,

B1-B2 =0

(uo*I1/2pi*x- uo*I2/2pi*(r-x))=0

I1/x- I2/(r-x))=0

4.4/x - 3/(4.4-x)=0

===> x=2.62 cm from the wire1

B)

let

at a distance of x from wire1 the net magnetic feild is zero,

B1+B2 =0

(uo*I1/2pi*x+ uo*I2/2pi*(r-x))=0

I1/x+ I2/(r-x))=0

4.4/x + 3/(4.4-x)=0

===> x=13.83 cm from the wire1

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