(1) Find the magnitude of the magnetic field at a distance of 1.65 cm from a sin
ID: 1291661 • Letter: #
Question
(1) Find the magnitude of the magnetic field at a distance of 1.65 cm from a single long wire carrying a current of 20.5 A.
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(2) For purposes of evaluating the magnetic field, model the rails as infinitely long. Using the result of part (a), find the magnetic field at the midpoint of the bar.
magnitude :___________________T
direction :a) +x b) -x c)+y d)-y e)+z f)-z
(3) Argue that this value of the field will be the same at all positions of the bar to the right of the midpoint of the rails. At other points along the bar, the field is in the same direction as at the midpoint, but is larger in magnitude. Assume the average effective magnetic field along the bar is five times larger than the field at the midpoint.
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(4) With this assumption find the magnitude of the force on the bar.
________________________________________N
(5) With the assumption find the direction of the force on the bar.
a) +x b) -x c)+y d)-y e)+z f)-z
(6) Is the bar properly modeled as a particle under constant acceleration?
a)yes
b)no
(7) Find the velocity of the bar after it has traveled a distance d = 135 cm to the end of the rails.
magnitude:________________m/s
direction: a) +x b) -x c)+y d)-y e)+z f)-z
Explanation / Answer
) Find the magnitude of the magnetic field at a distance of 1.65 cm from a single long wire carrying a current of 20.5 A.
(a) B =
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