1. A wire on the x-axis carries a current of 3.0 A. The current flows in the pos

Question

1.     A wire on the x-axis carries a current of 3.0 A. The current flows in the positive x-direction.

a.     What is the magnitude of the magnetic field 0.5 m from the wire in the positive y direction (above the wire)?

b.     What is the direction of the magnetic field above the wire?

c.     What is the direction of the magnetic field below the wire (negative y direction)?

d.     A proton is moving in the negative x direction with a velocity of 3.5 m/s and is 0.5 m in the positive y-direction from the wire. What is the magnitude and direction of the force on the proton due to the current in the wire?

e.     What is the acceleration of the proton due to the current in the wire?

Explanation / Answer

a) B = mu*i/(2*pi*0.5) = 4*10^-7

b)   in   +Z direction

c)   in   -Z direction

d) F =eVB = 26.32*10^(-26)

e) +y direction

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