11. Electricity
Electricity is a vital form of energy in modern society, used in various applications including homes and industries. The chapter discusses the principles of electric current, potential difference, resistance, and Ohm's law, as well as the heating effect of electric current and its applications. Conceptual understanding is reinforced through activities and examples, focusing on the properties and behavior of electrical circuits.
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Sections
Navigate through the learning materials and practice exercises.
What we have learnt
- A stream of electrons moving through a conductor constitutes an electric current.
- The SI unit of electric current is ampere.
- Resistance is a property that resists the flow of electrons in a conductor.
Key Concepts
- -- Electric Current
- The flow of electric charge in a circuit, measured in amperes.
- -- Potential Difference
- The work done to move a unit charge between two points in a circuit, measured in volts.
- -- Resistance
- The opposition to the flow of current in a conductor, measured in ohms.
- -- Ohm's Law
- The principle stating that the current through a conductor between two points is directly proportional to the voltage across the two points, provided the temperature remains constant.
Additional Learning Materials
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