WHomework set 9_solns_2011

# WHomework set 9_solns_2011 - Homework set # 9 Problems:...

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Homework set # 9 Problems: 19.20, 22; 20.1, 3 Solutions: 19.20 The magnitude of the torque is sin NBIA , where is the angle between the field and the perpendicular to the plane of the loop. The circumference of the loop is 22 . 0 0 m r , so the radius is 1.00 m r and the area is 1 m Ar  . Thus,    32 3 1 1 0.800 T 17.0 10 A m sin90.0 4.33 10 N m      19.22 Note that the angle between the field and the perpendicular to the plane of the loop is 90.0 30.0 60.0   . Then, the magnitude of the torque is       sin 100 0.80 T 1.2 A 0.40 m 0.30 m sin60.0 10 N m NBIA    With current in the – y direction, the outside edge of the loop will experience a force directed out of the page (+ z direction) according to the right hand rule.
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