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). electrical components and their functions
Inductors hate change. They resist sudden changes in current . If a capacitor is a water tank (pressure storage), an inductor is a heavy flywheel (flow storage). If you try to stop a flywheel instantly, it snaps the axle. Similarly, if you disconnect an inductor carrying current, it will generate a massive voltage spike to try to keep the current moving. (This is why relays have "flyback diodes"—to catch that spike.) An inductor is simply a coil of wire
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 transistor has three legs
Every time you flip a light switch, boot up a computer, or crank the volume on a guitar amp, you are witnessing a silent symphony. Millions, sometimes billions, of tiny actors perform a perfectly choreographed dance. But this dance isn't about light or sound—it is about control .
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).