AC through Inductor Class 12 Physics (Urdu Hindi) скачать в хорошем качестве

AC through Inductor Class 12 Physics (Urdu Hindi)

Welcome to this video on AC through Inductor! In this video, we'll explore the behavior of an inductor when an AC voltage is applied to it. First, let's define what an inductor is. An inductor is a passive electronic component that stores energy in a magnetic field when an electric current flows through it. Unlike a resistor, which resists the flow of current, an inductor opposes changes in current by inducing a voltage across its terminals. Now, when an AC voltage is applied to an inductor, the current flowing through the inductor is not only limited by the inductor's resistance but also by its inductance. This means that the current lags behind the voltage by a certain phase angle, which is determined by the frequency of the AC voltage and the value of the inductance. The power dissipation across an inductor is given by the product of the current flowing through it and the voltage drop across it. However, since the current lags behind the voltage, the power dissipated across the inductor is not constant but fluctuates with the AC cycle. This is why we say that an inductor does not dissipate power but stores energy in its magnetic field. In Class 12 Physics, we study the behavior of an inductor in an AC circuit. We can represent an inductor in an AC circuit by its impedance, which is a complex quantity that depends on the frequency of the AC voltage and the value of the inductance. The impedance of an inductor increases with frequency, which means that an inductor offers more opposition to high-frequency AC signals than low-frequency ones. When we apply an AC voltage to a pure inductor, that is, an inductor with zero resistance, the current flowing through it lags behind the voltage by a phase angle of 90 degrees. This means that the power dissipated across the inductor is zero, and all the power supplied by the AC source is stored in the inductor's magnetic field. This phenomenon is known as pure inductance. In this video, we've covered the behavior of an inductor when an AC voltage is applied to it. We've seen that an inductor opposes changes in current and that the current lags behind the voltage by a certain phase angle. We've also seen that an inductor stores energy in its magnetic field and that the power dissipated across it is not constant but fluctuates with the AC cycle. Thank you for watching this video on AC through Inductor! We hope you found it informative and helpful in understanding the behavior of an inductor in an AC circuit. If you have any questions or comments, please leave them in the comment section below. Don't forget to subscribe to our channel for more educational videos like this one!