power in a LCR circuit

Mean Value of current in Ac circuit:-

The mean value for a sinusoidal current is zero for a time period. It can be visualized from the figure the current magnitude above and below the x axis is same hence average current is zero. Mean value for half cycle is given by below expression:-

The RMS value of the current or DC equivalent of current is given by the equation

Alternating currents- Introduction

Most of the power distribution in our homes is AC. The Study of Alternating current becomes important as most of our power requirements in current world are fulfilled by Alternating Current. The topics we will be discussing in this chapter are only those which are included in IIT JEE syllabus.