Electrical Components And Their Functions May 2026

A transistor has three legs. A small amount of current/voltage on the "Base" (Gate) controls a large amount of current flowing between the "Collector" and "Emitter" (Drain and Source).

Ohm’s Law is the only equation you truly need to memorize. [ V = I \times R ] If you know two of these values, you can calculate the third. A 330Ω resistor with a 5V supply will pass roughly 15mA of current. 2. The Capacitor (The Reservoir) Function: To store electrical energy in an electric field . Unit: Farad (F) – usually microfarads (µF) or picofarads (pF). electrical components and their functions

They are just simple parts, following simple rules. But together, they run the world. Have a question about a specific component? Drop it in the comments below! A transistor has three legs