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Course Code - 24RPA ECE/EEE 001

Fundamentals of Electronics

Electronics is the foundation of modern technology, with resistors being one of its fundamental components. Resistors control the flow of current in circuits and are essential for protecting components from excessive voltage. Ohm’s Law (V = IR) helps calculate the relationship between voltage, current, and resistance. Understanding series and parallel resistor configurations enables precise control over electrical properties. Additionally, concepts like power ratings and incandescence play a crucial role in designing safe and efficient electronic systems.

Section 1: Introduction to Electronics and Resistors

Overview of electronic components, starting with resistors.

Role of resistors in controlling current flow.

Explanation of Ohm’s Law (V = IR).

Section 2: Understanding Current Flow and Resistance

Conventional current vs. actual electron flow.

Relationship between voltage, resistance, and current.

Practical examples of current calculations using different resistances.

Section 3: Series and Parallel Resistor Configurations

Effects of connecting resistors in series (increases total resistance).

Effects of connecting resistors in parallel (decreases total resistance).

How to calculate total resistance in both configurations.

Section 4: Power Rating and Heat Dissipation in Resistors

Importance of power ratings to prevent overheating.

Power calculation formulas (P = VI, P = I²R, P = V²/R).

Determining the maximum voltage a resistor can handle.

Section 5: Light Bulbs and Incandescence

How light bulbs convert electrical energy into light energy.

Incandescence process: heating a filament to emit light.

Efficiency concerns with incandescent bulbs and energy dissipation.

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