Electromagnetic Induction

This section focuses on electromagnetic induction, covering Faraday's laws, Lenz's law, eddy currents, inductance, and energy stored in inductors.

Faraday’s Laws Of Electromagnetic Induction

Faraday's Laws describe how a changing magnetic flux induces electromotive force (emf) in a circuit.

Lenz’s Law

Lenz's Law states that the direction of induced current opposes the change in magnetic flux that produced it, ensuring energy conservation.

Eddy Currents

Eddy currents are loops of electrical current that are induced within bulk conductors when exposed to changing magnetic fields, resulting in both energy losses and useful applications.

Inductance

Inductance is the property of a coil to oppose changes in current, influencing both self-induction and mutual induction.

Energy Stored In An Inductor

This section discusses the energy stored in an inductor, emphasizing the relationship between inductance, current, and stored energy.

Alternating Current (Ac)

This section introduces alternating current (AC), highlighting its periodic direction reversal and key metrics for understanding AC systems.

Alternating Current And Voltage

This section introduces alternating current (AC) and voltage, characterized by their periodic reversal and defined by specific mathematical equations and terms.

Terms Related To Ac

This section defines key terms related to alternating current (AC), including peak value, root mean square (RMS) value, and average value.

Ac In Circuit Elements

This section discusses the behavior of alternating current (AC) in different circuit elements, focusing on pure resistors, inductors, and capacitors.

Pure Resistor In Ac

This section explores the behavior of pure resistors in alternating current (AC) circuits, highlighting key relationships among voltage, current, and power.

Pure Inductor In Ac

This section discusses the behavior of a pure inductor in an alternating current circuit, emphasizing the phase difference between current and voltage.

Pure Capacitor In Ac

This section discusses the behavior of a pure capacitor in an alternating current (AC) circuit, highlighting how current leads voltage and the implications for power consumption.

Lcr Series Circuit

An LCR series circuit contains a resistor, inductor, and capacitor in series, with characteristics such as impedance and resonance.

Impedance (Z)

Impedance (Z) in an LCR circuit is the total opposition to the flow of alternating current, calculated using the resistance and reactance.

Phase Angle (Φ)

The phase angle (ϕ) in an LCR series circuit describes how far the current lags or leads the voltage based on the relationships between inductive and capacitive reactance.

Resonance In Lcr Circuit

Resonance in an LCR circuit occurs when the inductive reactance equals the capacitive reactance, resulting in minimum impedance and maximum current.

Power In Ac Circuits

This section discusses the concepts of instantaneous and average power in AC circuits, emphasizing the role of the power factor and its significance in understanding power consumption.

Instantaneous Power

This section discusses instantaneous power in AC circuits, focusing on its computation and significance.

Average Power

Average power in AC circuits is defined by the product of the root mean square values of voltage and current, multiplied by the cosine of the phase angle.

Transformers And Ac Generator

This section introduces transformers and AC generators, focusing on their functions, principles, and efficiency.

Transformer

The section on Transformers explains how these devices convert AC voltage through electromagnetic induction, highlighting their importance in electrical systems.

Ac Generator (Alternator)

This section discusses the AC generator, which converts mechanical energy into electrical energy using electromagnetic induction.