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Electromagnetism & Electronics

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Electromagnetism & Electronics

Capacitance

The ratio of the electric charge stored on a conductor or capacitor plate to the potential difference across it.

C = q / V = ε A / d F (Farads = C/V) Electromagnetism & Electronics

Capacitive Reactance

The opposition offered by a capacitor to alternating current flow, inversely proportional to AC frequency and capacitance.

X_C = 1 / (2π f C) = 1 / (ω C) Ω (Ohms) Electromagnetism & Electronics

Coulomb's Law

An inverse-square law stating that the electrostatic force between two stationary point charges is directly proportional to the product of…

F = k_e |q₁ q₂| / r² = (1 / (4π ε₀)) |q₁ q₂| / r² N (Newtons) Electromagnetism & Electronics

Cyclotron

A particle accelerator in which charged particles orbit spirally in a constant magnetic field while high-frequency AC electric fields…

f_c = (q B) / (2π m), KE_max = (q² B² R²) / (2 m) Hz (Frequency), J or MeV (Kinetic Energy)