Chapter 16, Problem 19Q

Consider the electric field at the three points indicated by the letters A, B, and C in Fig. 16—49. First draw an arrow at each point indicating the direction of the net force that a positive test charge would experience if placed at that point, then list the letters in order of decreasing field strength (strongest first). Explain.

To determine

The direction of net force experienced by a positive test charge at each point in the given figure.

Answer to Problem 19Q

Solution:

The direction of net force at the given points is drawn.

Decreasing order of field strength is A > B > C

Explanation of Solution

The direction of net forces is drawn at the points A, B & C. At the point C the net force is zero.

The order of letters in decreasing order of field strength is given by, A > B > C