Timmins PracticeFinal Essay

1193 Words Apr 4th, 2015 5 Pages
Practice Final Exam – Chapters 16-23, 25, 26, 28, 30-32

1) Three equal point charges are placed at three of the corners of a square of side d as shown above. Which of the arrows shown represents the direction of the net electric field at the vacant corner of the square?
A) A
B) B
C) C
D) D

2) The potential energy at x = 8 m is -2000 V and at x = 2 m is +400 V. What is the magnitude and direction of the electric field?
A) 200 V/m directed parallel to the +x-axis
B) 300 V/m directed parallel to the +x-axis
C) 400 V/m directed parallel to the +x-axis
D) 500 V/m directed parallel to the +x-axis

3) Four resistors of values 2 Ω, 4 Ω, 3 Ω, and 9 Ω are connected across a DC source with voltage V as shown in above. If the total current through
…show more content…
) A
20) C
21)

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