Answer Happy

In a certain region of space, the electric field points purely horizontally, thoug E=1200N/C The sign of the charge is positive. varies in strength (as shown in the image). A closed box is placed as shown. What can you say about the sign of the charge on the interior of the box? The sign of the charge is negative. The net charge in the box is zero. E=1800N/C The total charge in the box cannot be determined. hit
A uniform, positively-charged line of length L is lying on the x axis with its left end at the origin. What is the direction of the electric field at a point P that is a distance L from the origin and on the positive y axis? Toward the top of the screen. Toward the bottom of the screen. To the right. To the left. Up and to the right. Up and to the left. P L L