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Knowledge
Comprehension
Application
Analysis
Evaluation
100
What is the definition of a conductor?
A material that transfers charge easily.
100
Explain the process of polarization.
When a charged object is brought near a neutrally charged insulator, a dipole moment is created in the insulator. The insulator is slightly charged because the side closest to the charged object has the opposite charge. The side away from the charged object has the same charge.
100
What is the electric force between a glass ball that has +2.5 μC of charge and a rubber ball that has -5.0 μC of charge when they are separated by a distance of 5.0 cm?
45 N (attractive)
100
What is the difference between a conductor and inductor?
A conductor transfers a charge easily, while an inductor does not.
100
The electric force is stronger than the gravitational force. Why do you believe we feel the effects of the gravitational force, but not usually the electric force? Defend your answer.
Earth has such a large mass. Electric effects are not usually felt because most objects are electrically neutral, that is, they have the same number of electrons and protons.
200
What is the mass and charge of an electron?
-1.60 x 10^-19 C and 9.109 x 10^-31 kg
200
Illustrate charging by induction.
(There is supposed to be a diagram, but this game will not let me use photos. The answer to what it should basically look like is on the hard copy.)
200
Find the electric field at a point midway between two charges of +30.0 x 10^-9 C and +60.0 x 10^-9 C separated by a distance of 30.0 cm.
12.0 x 10^3 N/C, toward the +30.0 x 10^-9 C charge.
200
Compare and contrast the interactions between two positively charged particles and between one negatively charged particle and one positively charged particle.
The two positively charged particles attract one another. The one negatively charged particle and one positively charged particle repel one another.
200
Do you believe that microwave ovens are a more efficient way of heating food/drink items than other ovens? Support your answer with reasoning.
Yes, this is because these ovens supply microwaves, which are a high-frequency form of electromagnetic radiation. They supply an electric field that creates a bipolar effect. The bipolar molecules rub against one another causing friction. This friction leads to an increase of internal energy of the food. The microwave oven quickly heats food/drink items.