ECE 331 EXAM 1 EXAM QUESTIONS AND ANSWERS | 2026 UPDATE | 100% CORRECT.

ECE 331 EXAM 1 EXAM QUESTIONS
AND ANSWERS | 2026 UPDATE | 100%
CORRECT.



How fast do electrons travel in a good conductor? What is this velocity called? - ANS 0.1
mm/s drift velocity


The prongs on a typical grounded plug are more properly called what? What about the
receptacle? - ANS Blades and ground pin; Receptacle: slots and ground hole


What's the voltage of a typical wall socket in the U.S.? - ANS 120 V


Do birds land on distribution lines? Do they land on any wires? Explain why or why not. -
ANS Birds land on all cables, and particularly like the heat of distribution lines in the winter.


What's the meaning of the ground node in the node voltage analysis of a circuit. - ANS It's
the reference node and has 0V potential relative to itself.


How much current flows in a typical lightning bolt? - ANS on the order of 10 kA - 40 kA


What's the voltage of a car battery? How is it set up? - ANS 12 V
6 cells are connected in series, with 2 volts per cell


What is in one cell? - ANS - Sulfuric Acid (H2SO4) + water (electrolyte)

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