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Science

Electromagnetism

AC vs. DC Current

Basic Analog Electronics

Basic Electromagnetic Equations

Capacitor Types and Applications

Batteries and Their Characteristics

Common SI Units in Electromagnetism

Conductors and Insulators

Electric Field Concepts

Electrical Circuits Symbols

Electromagnetic Waves and Health

Electronic Component Schematics

Electric Motor Principles

Electrical Units and Conversion

Electrical Safety Measures

Electric Vehicles and Their Components

Famous Scientists in Electromagnetism

Historical Experiments in Electromagnetism

Kirchhoff's Laws

Laws of Electromagnetism

Maxwell's Equations

Magnetic Field Terminology

Lightning and Surge Protection

Ohm's Law

Transformers and Their Working

Types of Magnetic Materials

Wave Properties and Formulas

Wireless Communication Technologies

Voltage and Current Instruments

Series and Parallel Circuits

Basic Electromagnetic Equations

Flashcards

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Faraday's Law of Induction

Equation:

\mathcal{E} = -\frac{d\Phi_B}{dt}

; Variables:

\mathcal{E}

(induced electromotive force),

\Phi_B

(magnetic flux); Represents how a changing magnetic field can induce an electromotive force in a coil.

Gauss's Law for Magnetism

Equation:

\oint \vec{B} \cdot d\vec{A} = 0

; Variables: B (magnetic field),

d\vec{A}

(infinitesimal area element); Represents the net magnetic flux through a closed surface is always zero indicating no magnetic monopoles.

Ampère's Circuital Law

Equation:

\oint \vec{B} \cdot d\vec{l} = \mu_0I_{enc}

; Variables: B (magnetic field),

d\vec{l}

(infinitesimal length of wire),

\mu_0

(permeability of free space),

I_{enc}

(enclosed current); Represents the magnetic field around a current-carrying conductor.

Gauss's Law for Electricity

Equation:

\oint \vec{E} \cdot d\vec{A} = \frac{Q_{enc}}{\epsilon_0}

; Variables: E (electric field),

d\vec{A}

(infinitesimal area element),

Q_{enc}

(enclosed charge),

\epsilon_0

(vacuum permittivity); Represents the electric flux through a closed surface is proportional to the charge enclosed.

Coulomb's Law

Equation:

F = k_e \frac{q_1 q_2}{r^2}

; Variables: F (force),

k_e

(Coulomb's constant),

q_1

and

q_2

(charges), r (distance); Represents the electrostatic force between two charged particles.

Maxwell's Equations

Equation: Description of four fundamental equations; Variables: Varies per equation (includes electric field E, magnetic field B, etc.); Represents a complete set of laws of classical electromagnetism.

Biot-Savart Law

Equation:

\vec{B} = \frac{\mu_0}{4\pi} \int \frac{Id\vec{l} \times \hat{r}}{|r|^2}

; Variables: B (magnetic field),

\mu_0

(permeability of free space), I (current),

d\vec{l}

(infinitesimal element of current carrying wire),

\hat{r}

(unit vector from wire element to point P), r (distance); Represents the magnetic field created at a point due to a small current element.

The Continuity Equation

Equation:

\frac{\partial \rho}{\partial t} + \nabla \cdot (\rho \vec{v}) = 0

; Variables:

\rho

(charge density), t (time),

\vec{v}

(velocity of the charge flow); Represents the principle of charge conservation in a volume.

Ohm's Law

Equation: $V = IR$ ; Variables: V (voltage), I (current), R (resistance); Represents how the voltage in a circuit is the product of the current and the resistance.

Lorentz Force

Equation:

\vec{F} = q(\vec{E} + \vec{v} \times \vec{B})

; Variables: F (force), q (charge), E (electric field), v (velocity), B (magnetic field); Represents the force experienced by a charged particle moving in electric and magnetic fields.

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