The two insulated wires in (Figure 1) cross at a 30 angle but do not make electr
ID: 1871985 • Letter: T
Question
The two insulated wires in (Figure 1) cross at a 30 angle but do not make electrical contact. Each wire carries a 5.0 A current. Points 1 and 2 are each 4.0 em from the intersection and equally distant from both wires Part A What is the magnetic field at point 1? Express your answer using two significant figures. Enter your answer as positive if the magnetic field is directed into the page and as negative if the magnetic field is directed out of the page Submit Part B Figure 1of1 What is the magnetic field at point 2? Express your answer using two significant figures. Enter your answer as positive if the magnetic field is directed into the page and as negative if the magnetic field is directed out of the page 5.0 A 5.0 A SubmitExplanation / Answer
Given,
theta = 30 deg ; I = 5A ;
d = 4 cm
A)The magnetic field at 1 will be the sum of fields due to wires
B1 = u0 I1/2 pi d1 + u0 I2/2 pi d2
since, I1 = I2 = 5 A ; d1 = d2 = 0.04 cos15 = 0.0386 m
B1 = 2 x 4 pi x 10^-7 x 5/2 pi x 0.0386 = 5.26 x 10^-5 T
Hence, B1 = 5.18 x 10^-5 T
PartB) B2 = 0 T
Since here B field due to wires is equal but apposite in direction and hence cancels each other.
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