## Instantaneous Current in an Ideal Inductor

In the circuit of Figure 1, we assume that the inductor has negligible resistance. To satisfy Kirchhoff’s voltage … Read More

## Instantaneous Current in a Capacitor

If we connect a capacitor across a sine-wave voltage source, as in Figure 1, Kirchhoff’s voltage law requires … Read More

## Periodic Wave

Although the sine wave is by far the most important AC waveform, there are many other types of … Read More

## RMS Value of a Sine Wave

All electric circuits convert electric energy into some other form of energy, such as heat, light, or mechanical … Read More

## Energy Stored in an Inductor

If we connect an ideal inductor to a voltage source having no internal resistance, the voltage across the … Read More

## Resistance Measurement Methods

Low Resistance Measurement We can determine an unknown resistance in Figure 1 by applying Ohm’s law to the … Read More

## What is Frequency Response | Basics

The reaction of a circuit has to change in frequency is referred to as its Frequency Response. For … Read More

## AC Waveform & AC Circuit Theory

Generally, the term Alternating Current (AC) is used to describe any current that periodically changes direction. For example, … Read More

## Effect of Temperature on Resistance | Temperature Coefficient of Resistance

Checking the voltage/current (V/I) ratio of conductors at various temperatures shows that the resistance of most conducting materials … Read More

## Resonance in Series and Parallel RLC Circuit

In any AC circuit consisting of resistors, capacitors, and inductors, either in series or in parallel, a condition … Read More

## Phase Relationships in AC Circuits | Phase Difference | Phase Shift

Phase Difference When we have two sine waves with the same frequency, the duration of one cycle is … Read More

## Relationship between Voltage Current and Resistance

The fundamental relationship between resistance, voltage, and current can be expressed using Ohm’s law. Mathematically, it is expressed … Read More