Transcript What if Anything is Wrong Task on Elecctric Charge

What if Anything is
Wrong
Force between Electric Charges
Task Description
Four charged objects will be shown in a
simulation. The net force on object due to
all of the other charged objects is shown
with an arrow. When two of the objects are
brought close to each other, the net force
will be largely between the two charges.
Observe the simulation and then answer
the following questions about what if
anything is wrong.
What, if anything, is wrong with the
simulation?
There is nothing wrong
B. The force was in the wrong
direction on one charge
C. The force was in the wrong
direction on a pair of charges
D. The forces failed to obey
Newton’s third law
A.
Which particle had a force inconsistent
with the others?
A.
B.
C.
D.
E.
There is nothing wrong
A
B
C
D
What was wrong with the force
vector?
A.
B.
C.
There is nothing wrong
One of the force arrows
pointed the wrong way
Both force arrows pointed
the wrong way
Three students are having a
conversation about the fact that
the electrostatic force can be
both attractive and repulsive
and what this means about
charge.
Student A: “The fact that the
force is both repulsive and
attractive means there are
exactly two types of charge.
After all, opposites attract and
likes repel.”
Student B: “There are more
than two types of charge. An
uncharged aluminum can is
attracted to a charged rod. So
neutral is also a charge.”
Student C: “There could be
more than two types of charge.
You could have two groups of
charges that repelled each other
within a group, but attracted
charges in the other group.”
With which student do you
agree?
A.
B.
C.
D.
A
B
C
I don’t agree with
any of them
Why did you agree with that
student?
A.
B.
C.
D.
E.
I know there are only two types of charge
Since neutral objects attract, they must be
charged
Attraction and repulsion imply at least two types
of charge. There could be more.
Some other reason
I didn’t agree with any of them