12 Questions
What is the relationship between the amount of charge on each object and the size of the electric force between them?
The size of the electric force depends on the amount of charge on each object.
Why are charged objects affected by electric force?
Charged objects have an electric field around them which exerts an electric force on other charged objects.
How can an object become negatively charged?
An object becomes negatively charged when it gains electrons.
Explain how charging by friction occurs.
Charging by friction happens when electrons are transferred from one object to another.
Why don't atoms have a charge?
Atoms have equal numbers of positive and negative charges, so they do not have a net charge.
What happens to an object when it loses electrons?
An object becomes positively charged when it loses electrons.
What is the process where electrons move from one object to another by direct contact?
Conduction
What device can be used to see if something is charged?
Electroscope
When you bring various charged objects near the paper-clip hook, what happens?
Observe what happens
What is the process where charges in an uncharged metal object are rearranged without direct contact?
Induction
What happens when a negatively charged balloon is put beside a neutral wall?
Induces an area of negative charge on the surface of the wall
Why is an electroscope unable to determine whether the charge on an object is positive or negative?
It can only show that an object is charged, not the polarity of the charge
Test your knowledge on the electric force between protons and electrons. Explore concepts such as charge, distance, and the factors affecting the magnitude of the electric force.
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