A point charge is used to determine the electric field around a charged particle. Why is it necessary that the point charge does not affect the position of the charge being tested?
Answer
A
The amount of charge will increase if the charged particle moves closer to the point charge, so any change in position changes the field.
B
The amount of charge will decrease if the charged particle moves closer to the point charge, so any change in position changes the field.
C
Electric fields are inversely proportional to the square of the distance, so any change in position changes the field.
D
Electric fields are directly proportional to distance, so any change in position changes the field.