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Questions and Answers
Which particle is negatively charged?
Which particle is negatively charged?
An atom is electrically neutral if it contains unequal numbers of protons and electrons.
An atom is electrically neutral if it contains unequal numbers of protons and electrons.
False
What is the charge on a single proton?
What is the charge on a single proton?
+1.6 x 10^-19 Coulomb
To have a total charge of -1 C, an object would need an excess of ______ electrons.
To have a total charge of -1 C, an object would need an excess of ______ electrons.
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Match the following particles with their charges:
Match the following particles with their charges:
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What is the charge of an electron?
What is the charge of an electron?
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The unit of electric charge is known as the Joule.
The unit of electric charge is known as the Joule.
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Explain how to determine if an atom is electrically charged.
Explain how to determine if an atom is electrically charged.
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What is the relationship between objects with opposite charges?
What is the relationship between objects with opposite charges?
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Insulators allow electrons to flow freely from atom to atom.
Insulators allow electrons to flow freely from atom to atom.
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What is the unit of charge measured in?
What is the unit of charge measured in?
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Conductors are materials that permit electrons to flow freely from particle to ____.
Conductors are materials that permit electrons to flow freely from particle to ____.
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Which of the following describes a characteristic of static electricity?
Which of the following describes a characteristic of static electricity?
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Static electricity involves the behavior of charged ____.
Static electricity involves the behavior of charged ____.
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How does a physics teacher determine the charge on an object with an excess of protons?
How does a physics teacher determine the charge on an object with an excess of protons?
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Match the materials with their properties:
Match the materials with their properties:
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Study Notes
Introduction to Physics
- Topic: General Physics S2
- Instructor: Engr. Kazelle Anne A. Sallegue
- Welcome to new learning session.
- Expectations: Have paper, calculator (preferably scientific), and good listening skills.
Class Rules
- Be on time.
- Raise hand to ask questions or recite.
- Maintain respect in speaking and writing.
Learning Objectives
- Explain electron transfer in electrostatic charging.
- Solve problems involving electric charges, dipoles, forces, fields, and fluxes.
Electric Charge and Static Electricity
- Charge is a measurable quantity.
- Charge is measured in Coulombs (C).
- Charge on a single electron: -1.6 x 10-19 C
- Charge on a single proton: +1.6 x 10-19 C
Review of Subatomic Particles
- Electrons, protons, and neutrons are subatomic particles.
- Electrons are negatively charged, protons are positively charged, and neutrons are neutrally charged.
- Neutral atoms have equal numbers of protons and electrons.
Electrically Charged Atoms
- Imbalance in the number of protons and electrons creates a net charge.
Defining Electric Charge
- Charge reflects the imbalance between electrons and protons.
- To have a charge of -1 Coulomb, there will be 6.25 x 1018 excess electrons.
- To have a charge of +1 Coulomb, there will be 6.25 x 1018 missing electrons.
Static Electricity Concepts
- Opposites attract, and likes repel.
- Charged objects exert influence on each other.
- Two like charged objects repel each other.
Triboelectric Series
- A series of materials listed in order of their tendency to gain or lose electrons when rubbed against each other.
- Examples listed, and ranked by their electrostatic charge polarity.
Conductors
- Materials that allow electrons to flow freely.
- Charge distributes across the entire surface of a conductor.
Insulators
- Materials that impede the flow of electrons.
- Charge remains at the point of contact when transferred to an insulator.
Conductors vs. Insulators
- A comparison of materials and their conducting abilities.
- Examples listed ranging from Insulators to Conductors, with Semi-conductors in between.
- A visual example for using a conductor and an insulator.
Uniform Distribution of Charge on Conductors
- Explains that charges distribute evenly over a conducting surface.
- Use of diagrams to illustrate the conduct of metal vs an insulator when charged.
Summary of the Class
- Lesson 1 Recap: Electron vs. Proton, Neutron
- Lesson 2 Recap: Opposites attract, likes repel
- Lesson 3 Recap: Conductors and Insulators
- 1 electron = -1.6 x 10-19 Coulombs
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Description
This quiz covers the fundamental concepts of electricity and electrostatics in General Physics S2. It will assess your understanding of electric charges, subatomic particles, and the principles of electrostatic charging. Make sure to review your notes and be prepared to solve problems.
