Section outline

  • Introduction to Unit 3

    Until now we studied electrostatics which the study of fields of stationary charges. Now we are ready to study the charges in motion (electric current). In this section, we will study the basic properties of electrical conductors and some factors that contribute to the opposition to the flow of charges in conductors are discussed. We conclude by discussing the rate at which energy is transferred to a device in an electric circuit.

    Intended Learning Outcomes

    Having successfully completed this section, you should be able to

    • Describe quantitatively electric current and current density in terms of microscopic properties;
    • Explain the mechanisms of electrical conduction in different materials;
    • Describe the electric resistance, and related current, voltage, and resistance using Ohm’s law.

    Learning Activities

    E-tivity 3.1: Read the attached handouts

    E-tivity 3.2: Post any question or challenge you faced while reading the handouts. You are also invited to react on posted topics by your colleague(s) or by e-moderator(s)

    E-tivity 3.3: After reading the handouts attached under this unit, attempt the questions of the quiz

    • E-tivity 3.1: Handout on electric current and resistors File PDF
      Students must
      Mark as done
      1.6 MB
    • E-tivity 3.2: Discussion forum on electric current and resistors
      Students must
      Mark as done

      Dear Students,

      Please feel free to post any question or challenge you encountered while trying to understand the concepts discussed in the handout. You are also invited to react to topics posted by your colleagues and/or your e-moderators

      Thanks!

    • E-tivity 3.3: Quiz on electric current and resistors (ETE)

      After completing e-tivities 1&2, attempted the questions of this quiz

      Not available unless: You belong to ETE
    • E-tivity 3.3: Quiz on electric current and resistors (EPE)

      After completing e-tivities 1&2, attempted the questions of this quiz

      Not available unless: You belong to EPE
    • E-tivity 3: QUIZ

      For 1year CSE

      Not available unless: You belong to COE.Y1.HUYE cohort
    • Quiz #3 (Y1 MEE-GAKO)

      This Quiz is for only students from Y1 MEE-GAKO

    • Quiz #2: Electric current and resistors: SGEI
      Students must
      Mark as done

      This Quiz is for SGE I students only

    • SGE I catch up quiz (extra)
      Students must
      Mark as done