Synthesis
The test charge ( blue color ) moves under the effect of the field of
three immobile charges, that are situated in points A, B, C. the trajectory is
highlighted as it moves.
Activities
Question 1: Using the diagram, can you find whether charges
A, B, C are positive or negative?
Question 2: Can you explain the direction and
sign of the force's vector at the end of the motion? Can you predict the
following steps of the motion? (confirm
your answer with the velocity's vector)
Exercise: Can you calculate the rate of every charge? Given
that q=10-9C(hint: use the
"<step" and "step>" buttons and observe the motion
in detail)