Extra Credit worth 5 points.  (Only valid if following Honor…

Extra Credit worth 5 points.  (Only valid if following Honorlock instructions):  An air-filled solenoid has the characteristics shown above.  Determine the energy stored by this solenoid.  The only equations that may be used as starting equations are listed below (other than the area of a circle).  Show all algebraic steps leading to your final numerical answer.   

A segment of wire carries a current of 2.5 A along the z axi…

A segment of wire carries a current of 2.5 A along the z axis from z = +2.0 m to z = 0 and then along the y axis from y = 0 to y = 3.0 m.  In this region of space the magnetic field is equal to 4 Tesla in the positive x direction.  What is the magnitude of the force on this segment of wire?

  In the arrangement shown, a conducting bar of negligible r…

  In the arrangement shown, a conducting bar of negligible resistance slides along horizontal, parallel, frictionless conducting rails connected as shown to a 10-Ω resistor.  A uniform 3.3-T magnetic field is perpendicular into the plane of the page.  If L = 50 cm, what is the magnitude and direction of the current generated in the loop at the instant the bar is moving to the left at 7.3 m/s?  In your work, and in your own words, explain why the current flows in the direction you selected.