Physics Review Question

Unit: Electricity and Magnetism
Year: 1994 Question#: 25
Question: An electron is located 1.0 meter from a +2.0 coulomb charge, as shown in the diagram below.


The electrostatic force acting on the electron is directed toward point

(1 ) A
(2 ) B
(3 ) C
(4 ) D

What is this question really asking?



Explanation by: Ray J.

[ Return to question menu ]













Answer 1
Point A

INCORRECT

In order for point A to be correct, the 2.0 coulomb charge would have to be placed at point C due to the fact that opposite charges attract. return to top























Answer 2
Point B

INCORRECT

Since opposite charges attract, point B is incorrect. Point B shows that opposite charges repel which is incorrect. return to top

Answer 3
Point C

INCORRECT

Due to the fact that opposite charges attract, point C can not be true. Point C would be true if the 2.0 coulomb charge was at point A. return to top

Answer 4
Point D

CORRECT

Point D is correct because opposite charges attract. return to top

What's this question really asking?

It is asking whether or not you know that opposite charges attract.
return to top