A point charge of 3.0 µC is located on the y-axis at y = 4.0 m, and another point charge of 6.0 µC is located on the x-axis at x = 5.0 m. What is the direction (ccw from the x-axis) of the electric field at (5.0 m, 4.0 m)? A) 72^° B) 18^° C) 25^° D) 53^° E) 34^°

Question

Quizplus · Accepted Answer

The electric field at (5.0 m, 4.0 m) is the vector sum of the electric fields due to the two point charges. The electric field due to the charge at y = 4.0 m is directed along the negative y-axis, and the electric field due to the charge at x = 5.0 m is directed along the negative x-axis. The vector sum of these two electric fields is directed along the line connecting the two charges, which makes an angle of 72° with the x-axis.

A Point Charge of 3