United University

Physics Grade 8. Electric charge. Electric field. Electric current. Collection 1

Course Difficulty Icon Intermediate
Course Type Icon Course
Course Duration Icon 15 hours
Language version

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Course Overview

This unit covers the following topics:

  • Electrical phenomena and electrification of objects

  • Electric charge and types of charges

  • Interaction of charged bodies and the electric field

  • Law of conservation of electric charge and Coulomb's Law

  • Electric current and its effects

  • Conductors, semiconductors, and insulators

  • Sources of electric current

  • Electric current strength, ammeter

  • Electric voltage, voltmeter

  • Electrical resistance and Ohm’s Law for a circuit segment

  • Dependence of resistance on length, cross-sectional area, and material

  • Rheostats

Course Structure

Unit II: Electrical Phenomena. Electric Current

Lesson Breakdown:

  • Lesson 19:
    §19. Electric Charge and Electromagnetic Interaction

    • Review Questions

    • Exercise №19

  • Lesson 20:
    §20. Electric Field

    • Review Questions

    • Exercise №20

  • Lesson 21:
    Mechanism of Electrification. Electroscope

    • Review Questions

    • Exercise №21

  • Lesson 22:
    §22. Coulomb’s Law

    • Review Questions

    • Exercise №22

  • Lesson 23:
    §23. Electric Current. Electrical Conductivity of Materials

    • Review Questions

    • Exercise №23

  • Lesson 24:
    Effects of Electric Current

    • Review Questions

    • Exercise №24

  • Lesson 25:
    Sources of Electric Current

    • Review Questions

    • Exercise №25

  • Lesson 26:
    §26. Electric Circuit and Its Elements

    • Review Questions

    • Exercise №26

  • Lesson 27:
    Electric Current Strength. Unit of Measurement. Ammeter

    • Review Questions

    • Exercise №27

  • Lesson 28:
    Electric Voltage. Unit of Measurement. Voltmeter

    • Review Questions

    • Exercise №28

  • Lesson 29:
    §29. Electrical Resistance. Ohm’s Law

    • Review Questions

    • Exercise №29

  • Lesson 30:
    §30. Calculating Resistance. Resistivity of Materials. Rheostats

    • Review Questions

    • Exercise №30

  • Laboratory Work

  • Lesson 31:
    Series Connection of Conductors

    • Review Questions

    • Exercise №31

    • Laboratory Work

  • Lesson 32:
    Parallel Connection of Conductors

    • Review Questions

    • Exercise №32

    • Laboratory Work

  • Self-assessment Tasks:
    For Unit II: “Electrical Phenomena. Electric Current”

  • Unit Summary:
    Summary of Unit II: Electrical Phenomena. Electric Current

Expected Learning Outcomes

Upon completing this course, students will:

  • Understand the concept of electric charge, mechanisms of electrification, and interactions between charged objects;

  • Be able to represent electric fields graphically;

  • State and apply the laws of conservation of charge and Coulomb’s Law to solve physics problems;

  • Know the conditions necessary for electric current to exist;

  • Draw simple electric circuit diagrams;

  • Define physical quantities: current strength (and its unit), voltage (and its unit), resistance (and its unit);

  • Apply Ohm’s Law for a segment of a circuit;

  • Assemble simple electric circuits;

  • Use measuring instruments to determine current, voltage, and resistance;

  • Follow safety rules when working with electrical devices and instruments;

  • Apply formulas for calculating resistance based on length, cross-sectional area, and material resistivity;

  • Use both Ohm’s Law and resistance formulas to solve physics problems effectively.

Required Skills for Taking This Course

  • Basic computer literacy and ability to use devices;

  • Basic reading and writing skills;

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