Familiarization of schoolchildren with the main characteristics of alternating current when teaching physics in secondary school

Abstract

. The article provides a theoretical analysis of various types of alternating current. These types
of alternating current are used in industry, lighting networks, electrical and radio engineering, and also in
computer networks. The following characteristics of alternating current are investigated: instantaneous,
amplitude, average and effective (effective) values of current and voltage. The parameters of the average
and effective (effective) values of sinusoidal, periodic, rectified, three-phase and pulsating current are
studied.
Various types of AC rectifiers, a phase-pulse regulator and a three-phase rectifier were considered as
examples. Calculations were carried out to find the average and effective (effective) values of alternating
currents and voltages generated using these devices and equipment. The principles of operation of
magnetoelectric, electrodynamic and thermal measuring devices are analyzed.