Name: _____________________ Lab: Wed12-3/Thu12-3/Thu3-6
SSN:   _____________________ Date: _____________________


Physics 135bL
Quiz #10
(4pts. each)


1. T/F: The relationship between the resistance, length, and area of a resistor is always linear.
Answer:
False. Not linear at some extremes.


2. Given a wire with a resistivity of 1.68 x 10-8Wm, length of 30cm, and a diameter of 2mm. Use R = rL/A to calculate its resistance: _________________________________________________
Answer:
R = .002 Ohms


3. Please describe how the right hand rule works for the following vector: F = q(v x B) (feel free to use any diagrams, etc. to clarify your answer):
_________________________________________________
Answer:
cross product means resultant vector is perpendicular to both; right hand rule says


4. Suppose there is a magnetic field directed into the page and there's a wire embedded in the paper horizontally. If the wire is suddenly made to carry a current from left to right, the wire:
Answer:
C -- moves up.
  1. moves left.
  2. moves right.
  3. moves up.
  4. moves down.

5. Name at least one kind of transducer employed by Calvin in the following cartoon:
_________________________________________________
Answer:
Speaker, microphone, keypad.



Final Quiz "Get Out of Jail Free" Cartoon: Confused about one of the questions above? The Universal Answer (© 2000, Department Of Physics ExaminationS) is hidden somewhere in the following cartoon and may be used for any 1 (ONE) question above.