Provide evidence for the existence of two types of charge.
Solution not yet available
Fill in the blanks: The electrostatic force between like charges is
.
while the electrostatic force between opposite charges is
..
Solution not yet available
I have two positively charged metal balls placed \(\text{2}\) \(\text{m}\)
apart.
Is the electrostatic force between the balls attractive or
repulsive?
If I now move the balls so that they are \(\text{1}\)
\(\text{m}\) apart, what happens to the strength of the
electrostatic force between them?
Solution not yet available
I have \(\text{2}\) charged spheres each hanging from string as shown in the
picture below.
Choose the correct answer from the options below: The spheres will
swing towards each other due to the attractive electrostatic
force between them.
swing away from each other due to the attractive
electrostatic force between them.
swing towards each other due to the repulsive electrostatic
force between them.
swing away from each other due to the repulsive electrostatic
force between them.
Solution not yet available
Describe how objects (insulators) can be charged by contact or rubbing.
Solution not yet available
You are given a perspex ruler and a piece of cloth.
How would you charge the perspex ruler?
Explain how the ruler becomes charged in terms of charge.
How does the charged ruler attract small pieces of paper?
Solution not yet available
(IEB 2005/11 HG) An uncharged hollow metal sphere is placed on an insulating
stand. A positively charged rod is brought up to touch the hollow metal
sphere at P as shown in the diagram below. It is then moved away from
the sphere.
Where is the excess charge distributed on the sphere after the rod has been
removed?
It is still located at point P where the rod touched the
sphere.
It is evenly distributed over the outer surface of the hollow
sphere.
It is evenly distributed over the outer and inner surfaces of
the hollow sphere.
No charge remains on the hollow sphere.
Solution not yet available
What is the process called where molecules in an uncharged object are caused
to align in a particular direction due to an external charge?
Solution not yet available
Explain how an uncharged object can be attracted to a charged object. You
should use diagrams to illustrate your answer.
Solution not yet available
Explain how a stream of water can be attracted to a charged rod.
Solution not yet available
An object has an excess charge of \(-\text{8,6} \times
\text{10}^{-\text{18}}\) \(\text{C}\). How many excess electrons does it
have?
Solution not yet available
An object has an excess of \(\text{235}\) electrons. What is the charge on
the object?
Solution not yet available
An object has an excess of \(\text{235}\) protons. What is the charge on the
object?
Solution not yet available
Two identical, metal spheres have different charges. Sphere 1 has a charge of
\(-\text{4,8} \times \text{10}^{-\text{18}}\) \(\text{C}\). Sphere 2 has
\(\text{60}\) excess electrons. If the two spheres are brought into
contact and then separated, what charge will each have? How many
electrons does this correspond to?
Solution not yet available
Two identical, insulated spheres have different charges. Sphere 1 has a
charge of \(-\text{9,6} \times \text{10}^{-\text{18}}\) \(\text{C}\).
Sphere 2 has \(\text{60}\) excess electrons. If the two spheres are
brought into contact and then separated, what charge will each have?
Solution not yet available
Two identical, metal spheres have different charges. Sphere 1 has a charge of
\(-\text{4,8} \times \text{10}^{-\text{18}}\) \(\text{C}\). Sphere 2 has
\(\text{30}\) excess protons. If the two spheres are brought into
contact and then separated, what charge will each have? How many
electrons or protons does this correspond to?
