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Physics 4B THIRD EXAM Chapters 23 - 32 Fall 1994
Name:_________________________________________
Solve the following problems in the space provided. Use the back of the page if needed. Each problem is worth
20 points. You
must
show your work in a logical fashion starting with the correctly applied physical principles
which are on the last page. Your score will be maximized if your work is easy to follow because partial credit will
be awarded.
1. The square loop shown at the right has a current of 10.0A and its plane is parallel with a 2.00T magnetic
field. Its sides are 10.0cm long. (a)Find the magnitude and indicate the
direction of the force on each side of the loop. (b)Describe the resulting
motion of the loop assuming that it is released from rest from the position
shown.
2. Find the magnitude and direction of the magnetic field at the center of the coil shown
at the right. The coil has 100 turns, a radius of 5.00cm and carries 1.00A of current.
I
B
I
r
