51

Last updated

11 February 2025

pptx, 1.88 MB
pptx, 1.88 MB

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This “Component Characteristics” PowerPoint lesson is designed for AQA GCSE Physics students and explores the electrical characteristics of key circuit components, including resistors, diodes, thermistors, and light-dependent resistors (LDRs). The lesson covers Ohm’s Law, current-voltage (I-V) graphs, and practical applications of these components in electrical circuits.

The lesson begins with a starter activity to reinforce prior knowledge on resistance and Ohm’s Law. Students answer key questions such as how resistance is affected by wire length, the equation for Ohm’s Law, and how current and voltage are measured in circuits. These questions help build foundational knowledge before introducing new concepts.

Students then explore different circuit components, including fixed resistors, variable resistors, LDRs, diodes, LEDs, and thermistors. Each component is explained with circuit symbols, real-world applications, and an emphasis on how their resistance changes under different conditions. For example, students learn that an LDR’s resistance decreases as light intensity increases, making it useful in automatic street lighting, while thermistors are used in temperature-sensitive devices such as thermostats and fire alarms.

The lesson also introduces Ohm’s Law, defining resistance as the opposition to current and explaining how it can be calculated using the formula R=V/I. Students examine how some components obey Ohm’s Law (ohmic conductors) while others, such as filament bulbs and diodes, do not. I-V graphs for different components are analyzed, showing how resistance changes with voltage. Fixed resistors produce a straight-line graph as current and voltage are directly proportional, while filament bulbs show a curved graph due to increased resistance at higher temperatures.

To deepen understanding, students complete circuit diagram tasks, analyze I-V graphs, and discuss practical applications of electrical components. They also apply their knowledge through GCSE-style exam questions, including calculation problems and conceptual questions about resistance and component behavior.

This editable PowerPoint (.pptx) file aligns with the AQA GCSE Physics Specification and is an essential resource for teaching component characteristics, resistance, and I-V graphs. Updated in February 2025, the lesson includes structured explanations, real-world applications, and interactive problem-solving exercises to help students master the topic effectively.

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GCSE Physics Electricity Bundle: 13-Lesson Unit

This GCSE Electricity bundle provides a comprehensive and structured series of lessons designed to support students in mastering key concepts related to electrical circuits, resistance, power, and the National Grid. Covering essential theory, practical applications, and required practicals, this resource follows the GCSE Physics specification and is ideal for both classroom teaching and independent revision. What’s Included in the Bundle? This resource includes 13 fully planned PowerPoint lessons, each designed to engage students with clear explanations, worked examples, and interactive activities. Topics covered include: 1. Introduction to Electrical Circuits – Understanding circuit components, symbols, and simple circuit diagrams. 2. Current and Charge – Definition of electric current, its relationship with charge, and how it is measured. 3. Voltage and Potential Difference – Explanation of voltage (potential difference) and its effect on circuit components. 4. Voltage & Current in Series and Parallel Circuits – Key differences in current and voltage distribution in series and parallel circuits. 5. Resistance and Ohm’s Law (V = IR) – Explanation of resistance, how it affects circuits, and calculations using Ohm’s Law. 6. Required Practical: Investigating Resistance – Experimental investigation on how resistance changes with the length of a wire. 7. Component Characteristics – Understanding IV characteristics of fixed resistors, filament lamps, and diodes. 8. Required Practical: Component Characteristics – Investigating I-V graphs of different circuit components. 9. Required Practical: Resistance in Series and Parallel Circuits – Understanding how adding resistors affects total resistance in a circuit. 10. Alternating Current, Direct Current & The National Grid – Explanation of AC vs. DC, UK mains electricity, and National Grid transmission. 11. Cables and Plugs – Understanding the structure, safety features, and function of plugs and cables. 12. Electrical Power & Resistance Heating – How electrical appliances convert energy, including power calculations. 13. Efficiency and Cost of Appliances – Exploring energy efficiency, cost calculations, and real-world applications. Key Features: 1. Exam-Focused Content – Aligned with the GCSE Physics specification, ensuring curriculum coverage. 2. Interactive & Engaging – Includes starter activities, worked examples, and practice questions. 3. Clear Explanations & Visuals – Well-structured slides with circuit diagrams, formula breakdowns, and I-V graphs. 4. Practical & Required Practicals Included – Step-by-step practical investigations for resistance, component characteristics, and circuit behavior. Who is This Resource For? GCSE Physics students following the AQA specification. Teachers looking for complete, ready-to-use lessons with well-structured content and practical guidance. Tutors and independent learners seeking clear, concise, and exam-relevant resources. This bundle provides a full unit of study on electricity, helping students develop problem-solving skills, master calculations, and apply their knowledge to practical scenarios. Download now to enhance your GCSE Physics lessons with this high-quality, curriculum-aligned resource!

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Review

5

Something went wrong, please try again later.

faye_hadlington

6 months ago
5

Very clear and easy to follow. Very informative for non-specialist teachers.

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