In the picture to the right, two long straight wires carry currents 1₁ and 12, both pointing down along the page. At a point P, which is exactly at the midpoint between the two wires, the net magnetic field points into the screen. Based on that information, which of the following choices is correct regarding the magnitudes of the two currents? a) 1₁ > 1₂ b) 1₁ <1₂ c) I₁ = I₂ d) Not enough information to determine how the currents compare to each other. Select one and explain clearly! 1₁ P 1₂
In the picture to the right, two long straight wires carry currents 1₁ and 12, both pointing down along the page. At a point P, which is exactly at the midpoint between the two wires, the net magnetic field points into the screen. Based on that information, which of the following choices is correct regarding the magnitudes of the two currents? a) 1₁ > 1₂ b) 1₁ <1₂ c) I₁ = I₂ d) Not enough information to determine how the currents compare to each other. Select one and explain clearly! 1₁ P 1₂
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Question
Transcribed Image Text:In the picture to the right, two long straight wires carry currents 1₁ and 12,
both pointing down along the page.
At a point P, which is exactly at the midpoint between the two wires, the net
magnetic field points into the screen.
Based on that information, which of the following choices is correct
regarding the magnitudes of the two currents?
a) I₁ > 1₂
b) 1₁ <1₂
c) 1₁ = 1₂
d) Not enough information to determine how the currents compare to
each other.
Select one and explain clearly!
1₁
P
1₂
Expert Solution
Step 1
Given that
the current flowing through the left wire is
the current flowing through the right wire is
The direction of both wires is the downward
And at point P the net magnetic field is in the plane, and point P is in the middle of both wires.
So the distance from both wires to point P is the same, say r.
Since the magnetic due to current carrying wire at distance d is
Step by step
Solved in 4 steps
