February 21, 2017

Homework Help: Physics; Elect.

Posted by Thomas on Tuesday, February 1, 2011 at 2:53am.

1. A charge (uniform linear density=9.0 nC/m) is distributed along the x-axis from x=0 to x=3.0m. Determine the magnitude of the electric field at a point on the x axis with x=4.0m.

a)81 N/C
b)74 N/C
c)61 N/C
d)88 N/C
e)20 N/C

2. A +2nC point charge is placed at one corner of a square (1.5m on a side), and a -3.0nC charge is placed on a corner diagonally away from the first charge. What is the magnitude of the electric field at either of the two unoccupied corners?

a)20 N/C
b)14 N/C
c)4 N/C
d)12 N/C
e)8 N/C

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