The rod is maintained at a potential of -5000 volts with respect to the square w

Question

The rod is maintained at a potential of -5000 volts with respect to the square which is grounded (V=0). The contour lines are equipotentials with V = -4000, -3000, -2000, and -1000 volts.

Select a response for each statement below. (Use 'N', North, towards top of page (+y dir), and 'E', East, to the right (+x dir), 'NE' for in between 'N' and 'E', etc.)
True False N NE E SE S SW W NW  The x-component of the E-field at 1 is negative.
True False N NE E SE S SW W NW  The magnitude of the E-field at 1 is greater than that at 9
True False N NE E SE S SW W NW  The direction of the force on a small (-) charge at 8 is ....
True False N NE E SE S SW W NW  The direction of the E-field at 9 is ....
True False N NE E SE S SW W NW  The magnitude of the E-field at 2 is very small (~ zero).
True False N NE E SE S SW W NW  The y-component of the E-field at 7 is zero.
True False N NE E SE S SW W NW  The direction of the force on a small (+) charge at 7 is ....

http://tinypic.com/view.php?pic=1zn5qiv&s=8#.VYgtVUK8_ww

Explanation / Answer

1.TRUE

2. FALSE

3. OUTWARD

4. NW

5. TRUE

6. TRUE

7. TOWARDS LEFT

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