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Electromagnetism & Electronics

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Electromagnetism & Electronics

Biot-Savart Law

An equation describing the magnetic field vector generated at a point in space by a steady differential electric current element.

dB = (μ₀ / 4π) (I dl × r̂) / r² T (Tesla) Electromagnetism & Electronics

Bipolar Junction Transistor (BJT)

A three-terminal active semiconductor device (NPN or PNP) in which a small base current controls a much larger collector-emitter current.

I_E = I_B + I_C, I_C = β I_B A (Current)