ignmen PeoblemD 86933397 previous l 13 of 17 I next Problem 20.42 Part A Two kon

Question

ignmen PeoblemD 86933397 previous l 13 of 17 I next Problem 20.42 Part A Two kong then paralel wires 130 em apart cary 31-A Delermine the magntude of the magnetic Beld veckr at a point 100 cm trom one wie and 60 chom he other mue 1> n the same direction Express your answer using two signticant figures My Answers Gvep Incorrect:; Try Again; 4 attempts remaining Part B Determine the direction of the magnetic teld vector at that point Express your answer using two signiticant figures - 82 ·.measured courterkowsefromthe positiver as here to search

Explanation / Answer

Given

separation of the wires is 0.13 m , carrying current i = 31 A in the same direction

the magnetic field due to a current carying current i, at a distance d is b = mue0*i /2pi*d

PartA

so B1 = mue0*I/2pi*d1

B1 = 4pi*10^-7*31/(2pi*0.06) T

B1 = + 103.33*10^-6 T

by right hand rule the magnetic field is out of the page

and due to second wire is B2

B2 = mue0*I/2pi*d2

B1 = 4pi*10^-7*31/(2pi*0.1) T

B1 = -62*10^-6 T

by right hand rule the magnetic field is into the page

B = B1+B2

B = 103.33*10^-6 -62*10^-6 T = 40.22*10^-6 T

Part B

the direction of magnetic field is out of the page

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