A long, straight wire lies on a horizontal table in the xy-plane and carries a current of 1.40 µA in the positive x-direction along the x-axis. A proton is traveling in the negative x-direction at speed 2.60 x 10“ m/s a distance d above the wire (i.e. z = d). (a) What is the direction of the magnetic field of the wire at the position of the proton? --Select-- v direction (b) What is the direction of the magnetic force acting on the proton? ---Select--- v direction (c) Explain why the direction of the proton's motion doesn't change.

Question
A long, straight wire lies on a horizontal table in the xy-plane and carries a current of 1.40 µA in the positive x-direction along the x-axis. A proton is traveling in the negative x-direction at speed
2.60 x 10“ m/s a distance d above the wire (i.e. z = d).
(a) What is the direction of the magnetic field of the wire at the position of the proton?
--Select-- v direction
(b) What is the direction of the magnetic force acting on the proton?
---Select--- v direction
(c) Explain why the direction of the proton's motion doesn't change.
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Transcribed Image Text

A long, straight wire lies on a horizontal table in the xy-plane and carries a current of 1.40 µA in the positive x-direction along the x-axis. A proton is traveling in the negative x-direction at speed 2.60 x 10“ m/s a distance d above the wire (i.e. z = d). (a) What is the direction of the magnetic field of the wire at the position of the proton? --Select-- v direction (b) What is the direction of the magnetic force acting on the proton? ---Select--- v direction (c) Explain why the direction of the proton's motion doesn't change.

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Magnetic Effects of Current

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