Introduction to Physics S2 Quiz

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

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.