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Questions and Answers
If an object has an excess of electrons, what is its net electric charge?
If an object has an excess of electrons, what is its net electric charge?
- Negative (correct)
- It depends on the number of protons
- Positive
- Neutral
Two charged objects are observed to attract each other. Which of the following is a possible conclusion?
Two charged objects are observed to attract each other. Which of the following is a possible conclusion?
- One object is positively charged and the other is negatively charged (correct)
- Both objects are negatively charged
- Both objects are positively charged
- Both objects are neutral
A pith ball is touched by a charged rod and then suspended near another charged object. If the pith ball is repelled, what can you conclude?
A pith ball is touched by a charged rod and then suspended near another charged object. If the pith ball is repelled, what can you conclude?
- The rod and the suspended object have the same type of charge. (correct)
- The rod and the suspended object have opposite charges.
- The pith ball is neutral.
- The suspended object is neutral.
Consider three objects: A, B, and C. A and B repel each other, while A and C attract each other. What can you conclude about the charges of B and C?
Consider three objects: A, B, and C. A and B repel each other, while A and C attract each other. What can you conclude about the charges of B and C?
How does the electric force between two charged particles change if the distance between them is doubled?
How does the electric force between two charged particles change if the distance between them is doubled?
Object X has a positive charge. Object Y is neutral. What happens when they are brought into close proximity?
Object X has a positive charge. Object Y is neutral. What happens when they are brought into close proximity?
Two identical metal spheres carry charges of +3q and -q, respectively. They are brought into contact and then separated. What is the charge on each sphere after separation?
Two identical metal spheres carry charges of +3q and -q, respectively. They are brought into contact and then separated. What is the charge on each sphere after separation?
If a plastic rod is rubbed with fur, the rod becomes negatively charged. What happens to the fur?
If a plastic rod is rubbed with fur, the rod becomes negatively charged. What happens to the fur?
A neutral object is grounded. What happens to its net charge?
A neutral object is grounded. What happens to its net charge?
An electroscope is initially uncharged. A positively charged rod is brought near (but not touching) the electroscope's knob. What happens to the leaves of the electroscope?
An electroscope is initially uncharged. A positively charged rod is brought near (but not touching) the electroscope's knob. What happens to the leaves of the electroscope?
Flashcards
Electric Charge
Electric Charge
A fundamental property of matter causing electric forces and fields.
Positive Charge (+q)
Positive Charge (+q)
Charge carried by protons.
Negative Charge (-q)
Negative Charge (-q)
Charge carried by electrons.
Like charges repel
Like charges repel
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Unlike charges attract
Unlike charges attract
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Study Notes
- Electric charge is a fundamental property of matter
- Electric charge gives rise to electric forces and electric fields
- Charged particles interact through the electromagnetic force
- The electromagnetic force is one of the four fundamental forces of nature
Basic Properties of Electric Charge
- Positive Charge (+q) is possessed by protons
- Negative Charge (-q) is possessed by electrons
- Like charges repel, and unlike charges attract
- Two protons repel each other
- An electron and a proton attract
- Charge is quantized
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