As shown in the figure, two long, straight current-carrying wires (1 and 2) are
ID: 1467079 • Letter: A
Question
As shown in the figure, two long, straight current-carrying wires (1 and 2) are attached at right angles to a board by wire brackets. The current in wire 1 is 8.15 A in the negative ydirection and the current in wire 2 is 5.00 A in the positive x direction. The points A and B are a distance
r = 0.200 m
from both wires.
(a) How does the magnitude of the net magnetic field at point A compare to the magnitude of the net magnetic field at point B?
BA > BB
BA = BB
BA < BB
(b) Determine the magnitude of the net magnetic field at points A and B.
(c) If the brackets holding wire 2 are removed, what will happen to wire 2?
It will rotate clockwise.It will rotate counterclockwise. Nothing will happen.
point A T point B TExplanation / Answer
here,
B)
I1 = 8.15 A
I2 = 5 A
r = 0.2 m
the net magnetic feild at point A , Ba = u0*I1/( 2*pi*r) - u0*I2/( 2*pi*r)
Ba = 1.26 * 10^-6 /( 2*pi*0.2) *( I1 - I2)
Ba = 3.16 * 10^-6 T
magnetic feild at point B ,Bb = u0*I1/( 2*pi*r) + u0*I2/( 2*pi*r)
Bb = 1.26 * 10^-6 /( 2*pi*0.2) *( I1 + I2)
Bb = 13.19 * 10^-6 T
the magnetic feild at point b is 13.19 * 10^-6 T
a)
no the magnetic feild feild at point A and B is not same
BA < BB
c)
the wire 2 will rotate in clockwise direction
as the wire 1 attracts wire 2
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