Answer to Question #103387 in Electricity and Magnetism for dsfa

Question

A copper bar is cut in half and a rubber plug is placed between the two pieces. A negatively charged rod is touched at Point A. Small pieces of paper are placed at Points B, C, D and E. Which of the following is most likely to happen? The small pieces of paper will stick at ______________.




Select one:
a. B only
b. B, C, and E
c. B, C, D, and E Incorrect
d. C only

Answer 1

As per the given condition in the question,

The diagram represents the copper bar, which cuts into the two piece and and a rubber introduce between the two piece. Now, when we will put the negative charge on the one piece of copper bar, then it will be equally distributed to the other half of the copper bar.

Then the positive charge will get induce in the second piece of the copper bar, which is near to the point A, and on the opposite side there will be a equally negative charge will get induce.

So all the piece of paper will get attract towards the rod with the same magnitude of forces.