Goal: Hone the vector nature of electric force.
Source: UMPERG-A2LEM1
Two positive charges, Q and q, are positioned as shown in the diagram.
What is the direction of the electrical force on q due to Q?
A2L Item 117
Tag Archives: Electromagnetism
A2L Item 116
Goal: Hone vector nature of electric fields
Source: UMPERG-em97Q
Two uniformly charged rods are positioned horizontally as shown. The
top rod is positively charged and the bottom rod is negatively charged.
The total electric field at the origin
- Is 0.
- Has both an x and a y component.
- Points totally in the i direction.
- Points totally in the -i direction.
- Points totally in the j direction.
- Points totally in the -j direction.
Commentary:
Answer
(6) Along the y-axis, by symmetry, the electric field due to either rod
points along the y-axis. At the origin the contribution to each rod is
the same and points down.
Commentary:
Answer
(1) The force is repulsive.