Phys 4, Section 2             Quiz 7                 Mar 7, 2002

1. Which of the following terms is not a flux?
A) E·A         B) B·L         C) neither is flux         D) both are flux

2. Who made a correction to Ampere’s law?
A) Ampere         B) Faraday         C) Coulomb         D) Maxwell

3. The B-field inside a long solenoid is easily derived using a(n)
A) amperian circular loop     B) amperian rectangle     C) gaussian sphere
D) gaussian pillbox             E) gaussian cylinder

4. Displacement current (I_D) is proportional to
A) Φ_B             B) Φ_E             C) dΦ_B/dt             D) dΦ_E/dt

5. If the North pole of a bar magnet is moved down toward a wire loop on the
floor, the current induced in the wire will flow
A) clockwise             B) counterclockwise

6. If the South pole of a bar magnet is moved up away from a wire loop on the
floor, the current induced in the wire will flow
A) clockwise             B) counterclockwise

7. If a wire parallel to the base of a horizontal U-shaped wire is pulled back and
forth while the circuit is perpendicular to a uniform B-field, the system will be an
example of a
A) AC motor         B) AC generator         C) DC motor         D) DC generator

8. If a thin aluminum plate is swung vertically between the plates of a horseshoe
magnet, the swing will not be dramatically slowed if the plate contains a
A) series of vertical slots         B) series of horizontal slots        C) solid (no slots)

9. Who gave a simple explanation for the direction of the induced current in a loop
when the magnetic flux through the plane of the loop changes?
A) Ampere         B) Faraday             C) Lenz             D) Maxwell

10. Which of the following is famous for two basic equations in electricity and
magnetism?
A) Coulomb             B) Gauss             C) Ampere     D) Faraday         E) Maxwell

Answers: 1-b, 2-d, 3-b, 4-d, 5-b, 6-b, 7-b, 8-b, 9-c, 10-b 

Last modified on April 02, 2002