Phys 4, Section 2                                                          Feb 7, 2002

1. To combine two capacitors so as to obtain the smallest effective capacitance,
they should be combined in
A) series         B) parallel             C) throw away the larger of the two

2. A battery of voltage V is connected across a flat-plate capacitor. If the plates
are separated to twice their original separation, the E-field between the plates 
will be
A) doubled     B) quadrupled     C) halved     D) quartered     E) unchanged

3. An uncharged capacitor has no capacitance.
A) true                 B) false

4. Which of the following depends only on the material involved?
A) resistance                                 B) resistivity

5. What material has the rather unusual property that its resistivity decreases 
with an increase in temperature?
A) tungsten             B) aluminum             C) glass             D) carbon

6. Who is credited with first making a reliable battery?
A) Coulomb        B) Gauss         C) Faraday         D) Volterra         E) Ampere

7. The energy density in an electric field is proportional to
A) E             B) 1/E             C) E²             D) 1/E²

8. Which of the following is the correct unit for electric potential?
A) joule         B) watt         C) volt             D) ampere

9. The product qV represents
A) current         B) power             C) energy             D) voltage

10. Two unequal capacitors connected in parallel will have an effective 
capacitance
A) smaller than the smaller capacitor
B) larger than the larger capacitor
C) between the two capacitor values

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

Last modified on February 07, 2002