Physics 12 Spring 2007 Test 3.1

# Physics 12 Spring 2007 Test 3.1 - Physics 12 spring 2007...

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Physics 12 spring 2007 Test 3 Name: Please circle the best answer to the following questions. 1) Magnetic flux depends upon: A) the magnetic field B) the area involved C) the orientation of the area with respect to the field D) all of the above 2) A long wire is placed on x-axis and carries a 3 A current to the + x direction. The wire passes through a uniform magnetic field B = (0.2 i – 0.3 j ) T. The magnitude of the force on the wire per unit length is: A) (0.9 k ) N/m B) (-0.9 k ) N/m C) (0.9 j ) N/m D) (-0.9 j ) N/m 3) If a straight wire carries a current to the right in the plane of the paper, then the magnetic field at a point P in the plane of the paper has a direction A) into the paper B) out of the paper C) parallel to the current D) antiparallel to the current 1

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4) A circular coil of wire has a radius of 10 cm and contains 10 loops. The current in each loop is 3 A, and the coil is placed in a 2 T magnetic field. 4.1) what is the magnitude of the magnetic dipole moment of the coil? A)
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Physics 12 Spring 2007 Test 3.1 - Physics 12 spring 2007...

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