6) In animation 2, when the test charge is released, it begins to accelerate tow

Question

6)  In animation 2, when the test charge is released, it begins to accelerate toward the negative charge. The force vector on the test charge also points toward the negative charge. Which law best describes this relationship?
     Coulomb's Law
     Newton's 2nd Law
     Hooke's Law
     Gauss' Law

7)  Briefly explain your answer.

8)  In animation 2, compare the force on the test charge, f, when the test charge is half way between where it started and the negative charge, to the force on the test charge, fo, when it was first released.
     f = fo
     f > fo
     f < fo

9)  In animation 2, is the test charge positive or negative?
     positive
     negative
     you cannot determine this!

10)  In animation 2, does the test charge follow the path of the electric field vectors?
     yes   no

Explanation / Answer

6.

Newton's 2nd Law

7.

the direction of net force is same as the direction of acceleration. Since the positive charge accelerate towards the negative charge, hence the direction of net force is towards negative charge.

8.

according to coulomb's law , the force on the test charge is inversly related to square of its distance from negative charge.

hence as the distance decrease, the force becomes larger

so f > fo

9.

test charge is positive

10.

yes

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