Overview of basic electronic components, circuits, and principles including voltage, current, resistance, and Ohm's Law.
Introduction to Basic Electronics
- Introduction
- Electronics is the study and control of electric current in circuits and devices.
- It underpins computers, communications, and modern appliances.
- Fundamental Quantities
- Voltage: electrical potential difference, measured in volts.
- Current: the flow of electric charge, measured in amperes.
- Resistance: opposition to current flow, measured in ohms.
- Ohm's Law
- Ohm's Law: voltage equals current multiplied by resistance, or V = IR.
- It relates the three core electrical quantities.
- It is used to calculate unknown values in simple circuits.
- Circuit Components
- Resistors limit current; capacitors store charge.
- Inductors store energy in magnetic fields; diodes allow one-way flow.
- Sources such as batteries supply electrical energy.
- Circuit Types
- Series circuit: components share a single current path.
- Parallel circuit: components share the same voltage across branches.
- Conductors carry current while insulators block it.