This problem explores the behavior of charge on realistic (i.e. non-ideal) insulators. We take as an…
The following solution is suggested to handle the subject “This problem explores the behavior of charge on realistic (i.e. non-ideal) insulators. We take as an…“. Let’s keep an eye on the content below!
Question “This problem explores the behavior of charge on realistic (i.e. non-ideal) insulators. We take as an…”
charge on realistic (i.e. non-ideal) insulators. We take as an
example a long insulating rod suspended by insulating wires. Assume
that the rod is initially electrically neutral. For convenience, we
will refer to the left end of the rod as end A, and the right end
of the rod as end B. In the answer options for this problem,
“weakly attracted/repelled” means “attracted/repelled with a force
of magnitude similar to that which would exist between two balls,
one of which is charged, and the other acquires a small induced
charge”. An attractive/repulsive force greater than this should be
classified as “strongly attracted/repelled”.
charge, then brought near (i.e., within a few millimeters) to end A
of the rod. What happens to end A of the rod when the ball
approaches it closely this first time?
strongly repelled | |
strongly attracted | |
weakly attracted | |
weakly repelled | |
neither attracted nor repelled |
happens when the small metal ball is repeatedly given a
negative charge and then brought into contact with end A of
the rod
ball, how is the charge on the rod arranged?
positive charge on end B and negative charge on end A | |
negative charge spread evenly on both ends | |
negative charge on end A with end B remaining almost neutral | |
positive charge on end A with end B remaining almost neutral | |
none of the above |
ball approaches it after it has already made several contacts with
the rod, such that a fairly large charge has been deposited at end
A?
Select the expected behavior.
strongly repelled | |
strongly attracted | |
weakly attracted | |
weakly repelled | |
neither attracted nor repelled |
Answer
The concept of Electrostatic Induction is required to answer the question.
First, determine what happens to the end A of your rod when the ball comes close enough. Find the arrangement of the rod’s charges later. Find out how the rod’s end A reacts when the charged ball approaches end A, and then the reaction of end A when it approaches it.
An electrostatic induction is the distribution of electric charges on an object by the influence of nearby charges. The sign of charge on the charged object will indicate whether a positive or negative charge is developing on one side.
An object charged has an equal number of positive and negative charges. The electron transfer takes place when a charged object comes in contact with an uncharged conductor. This is called electrostatic equilibrium. Charging by conduction is the process of charging an object that has not been charged by bringing it in contact with another charged body.
(A)
The ball of negatively charged small metal is brought to the rod’s end. All the positive charges within the rod tends towards end A, while the rod’s negative charges tend to move towards rod end B. The ball is weakly attracted, weakly repelled, and not strongly repulsed.
The rod’s positive and negative charges tend to move towards one end. However, the ball of small metal with a negatively charged charge is brought close to the rod’s end. The small metal ball is attracted to the rod’s end A when it gets close enough.
(B)
The rod’s negatively charged metal ball contacts the rod and the rod absorbs the negative charges. However, the rod is constantly supplying negative charges to its metal ball. There is therefore no positive charge at the end B, nor a negative charge at the end A. There is also no charge at the end A if end B is neutral. However, there is a positive charge at end A if end B is neutral.
The rod’s negatively charged metal ball contacts the rod and the rod absorbs the negative charges. However, the rod is constantly supplying negative charges to its metal ball. There is therefore no positive charge at the end B, but there is a constant supply of negative charges to the metal ball. All the rod’s positive charges are eventually neutralized. After that, the rod starts to receive negative charges.
(C)
Because of the many contacts between the rod and the metal ball, negatively charged charges are evenly distributed on both ends. End A of the rod is therefore not attracted to, weakly attracted or repelled by the negatively charged metal ball.
Because of the many contacts between the rod and the negatively charged metal ball, both ends are covered with negatively charged charges. The rod is strongly repelled by the negatively charged ball when it reaches end A.
Part A – Ans
When the small metal ball is close to the end A, it becomes weakly attracted.
Conclusion
Above is the solution for “This problem explores the behavior of charge on realistic (i.e. non-ideal) insulators. We take as an…“. We hope that you find a good answer and gain the knowledge about this topic of science.