Lesson Plan: Alternating-Current Ammeters Physics

This lesson plan includes the objectives, prerequisites, and exclusions of the lesson teaching students how to describe the construction of ammeters using the thermal expansion of conducting wires to measure alternating currents.


Students will be able to

  • identify the components of a hot-wire ammeter and their configuration,
  • explain the functions of the configured components of a hot-wire ammeter,
  • recognize the disadvantages of the hot-wire ammeter.


Students should already be familiar with

  • galvanometers,
  • ammeters,
  • alternating current,
  • resistive dissipation,
  • thermal expansion.


Students will not cover

  • calculations of alternating current.

Nagwa uses cookies to ensure you get the best experience on our website. Learn more about our Privacy Policy.