Current

Introduction

• What is electric current? The flow of electric charge.

• Units of current: Amperes (A).

Factors Affecting Current

• Voltage: The potential difference between two points in a circuit.

• Resistance: The opposition to the flow of current.

• Ohm's law: The relationship between voltage, current, and resistance.

Series and Parallel Circuits

• Series circuits: Components connected one after another.

• Parallel circuits: Components connected side by side.

• The effects of adding components in series or parallel on the total current in a circuit.

Electrical Power

• Definition: The rate at which electrical energy is transferred.

• Calculation of power: P = IV.

• Units of power: Watts (W).

Electrical Safety

• Hazards of electricity: Electric shock, fires, and other dangers.

• Safety precautions: Using insulation, fuses, and circuit breakers.