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Core - Physics

    Chapter 32

    Alternating-Current Circuits

    32.1 : AC Sources01:20

    32.1 : AC Sources

    Direct current is a flow of electric charge in only one direction and has a steady state of constant voltage in the circuit. Rectifiers, batteries, ...

    2.9K views
    32.2 : RMS Value in AC Circuit01:13

    32.2 : RMS Value in AC Circuit

    The root mean square (RMS) value is a measure of the effective or average value of an alternating current (AC) waveform. In AC circuits, the voltage or ...

    1.8K views
    32.3 : Resistor in an AC Circuit01:31

    32.3 : Resistor in an AC Circuit

    An alternating emf or voltage source is needed to supply an alternating current (AC) to a circuit. A coil of wire rotating in a magnetic field at a ...

    2.6K views
    32.4 : Capacitor in an AC Circuit01:23

    32.4 : Capacitor in an AC Circuit

    A capacitor is charged by passing an electric current through it, which causes the plates to start accumulating an electrostatic charge. Since the ...

    2.6K views
    32.5 : Inductor in an AC Circuit01:16

    32.5 : Inductor in an AC Circuit

    The basic components of an inductor are coils or loops of wire that are either wound around a hollow tube former or a ferromagnetic material (iron-cored) ...

    2.4K views
    32.6 : RLC Series Circuits: Introduction01:25

    32.6 : RLC Series Circuits: Introduction

    Consider an RLC series circuit consisting of a resistor, an inductor, and a capacitor connected to an AC voltage source. A current, which varies ...

    2.2K views
    32.7 : RLC Series Circuits: Impedance01:29

    32.7 : RLC Series Circuits: Impedance

    When current flow is opposed in a DC or AC circuit, it is referred to as resistance or impedance, respectively. Impedance plays a key role in determining ...

    2.1K views
    32.8 : RLC Series Circuit: Problem-Solving01:30

    32.8 : RLC Series Circuit: Problem-Solving

    Consider an AC generator with a frequency of 50 hertz and a voltage of 120 volts. The AC generator is connected to an RLC series circuit with a 20-ohms ...

    1.9K views
    32.9 : Power in an AC Circuit01:26

    32.9 : Power in an AC Circuit

    In a DC circuit, the power consumed is simply the product of the DC voltage times the DC current, given in watts. However, the power consumed for AC ...

    2.0K views
    32.10 : Resonance in an AC Circuit01:26

    32.10 : Resonance in an AC Circuit

    The property of an inductor makes it resist any change in the current passing through it, while the property of a capacitor is to build up the charge ...

    2.0K views
    32.11 : Transformers01:26

    32.11 : Transformers

    A device that transforms voltages from one value to another using induction is called a transformer. A transformer consists of two separate coils, or ...

    1.1K views
    32.12 : Types Of Transformers01:16

    32.12 : Types Of Transformers

    Transformers can provide desired voltages to a circuit by modifying the number of turns in the secondary windings. If the ratio of the number of turns in ...

    946 views
    32.13 : Energy Losses in Transformers01:21

    32.13 : Energy Losses in Transformers

    In an ideal transformer, it is assumed that there are no energy losses, and, hence, all the power at the primary winding is transferred to the secondary ...

    828 views
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