Electrical Components And Their Functions 'link' (2026)

At the heart of every electronic device lies a simple truth: Our job as engineers and makers is to tell it how . We do this using the seven fundamental electrical components.

A diode is a semiconductor sandwich (P-type and N-type silicon). On one side, it looks like an open highway; on the other, it looks like a brick wall.

Think of a capacitor as a very fast, very small rechargeable battery. It consists of two conductive plates separated by an insulator (dielectric). Voltage pushes electrons onto one plate; they want to jump to the other side but can't cross the gap. This creates a stored charge. electrical components and their functions

An inductor is simply a coil of wire. When current flows, it creates a magnetic field around the coil. When the current tries to stop, that magnetic field collapses and pushes the current to keep going .

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). At the heart of every electronic device lies

When you apply voltage, the resistor limits the current. The capacitor fills up slowly. The time it takes to charge is not random; it is precise: [ T = R \times C ]

A resistor is a deliberate obstacle. Inside, carbon or metal film forces electrons to bounce around, converting electrical energy into heat (which is why resistors get hot). On one side, it looks like an open

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).