Electrical principles

Module 3: Applying Ohm's Law to Circuits

  • Lesson 3.1: Series Circuits

    • Characteristics of a series circuit.

    • Total resistance in a series circuit ().

    • Applying Ohm's Law to find voltage drops across individual components.

  • Lesson 3.2: Parallel Circuits

    • Characteristics of a parallel circuit.

    • Total resistance in a parallel circuit ().

    • Understanding current division in parallel branches.

  • Lesson 3.3: Combination Circuits (Series-Parallel)

    • Breaking down more complex circuits into simpler series and parallel parts.

    • Solving for unknown values in combination circuits.

  • Lesson 3.4: Electrical Power (P)

    • Definition of power as the rate at which energy is used.

    • Units of measurement: Watts (W).

    • The power formulas: , , .

    • The relationship between Ohm's Law and power.

  • Lesson 4.1: Ohm's Law in Action

    • Examples from everyday life: light bulbs, heaters, fuses.

    • Understanding circuit protection (fuses and circuit breakers).

  • Lesson 4.2: Circuit Troubleshooting

    • Using a multimeter and Ohm's Law to find faults in a circuit (e.g., open circuits, short circuits).

    • Practical troubleshooting scenarios.

  • Lesson 4.3: Limitations of Ohm's Law

    • When Ohm's Law doesn't apply (e.g., non-ohmic materials like diodes).

  • Lesson 4.4: Final Project

    • Design and build a simple circuit (e.g., a simple LED flashlight or a dimmer circuit) and use Ohm's Law to calculate the required resistor value.