51

Last updated

11 February 2025

pptx, 3.22 MB
pptx, 3.22 MB

**Save 54% with the Complete Electricity Bundle! **
Get this lesson as part of our GCSE Electricity Bundle and enjoy a huge discount! Instead of buying lessons individually, grab the entire unit with 13 lessons, including required practicals, for just £12.00.
Click here to get the bundle now: /teaching-resource/resource-13199110

This “Electrical Power & Resistance Heating” PowerPoint lesson is designed for AQA GCSE Physics students, covering the concepts of power, energy transfer, resistance heating, and key equations used to calculate electrical power. The lesson includes step-by-step explanations, worked examples, and practice questions to help students apply their understanding to real-world electrical applications.

The lesson begins with a starter activity reviewing key components of a plug, including the live, neutral, and earth wires, the function of a fuse, and the importance of three-core cables for appliances with metal casings. This ensures students recall essential electrical safety concepts before learning about electrical power and resistance heating.

Students then explore electrical power, learning how power is defined as the rate at which energy is transferred. They compare appliances with different power ratings to understand how power affects performance, using relatable examples such as blenders and kettles. The power equation is introduced: P = E/t where P is power (watts), E is energy transferred (joules), and t is time (seconds). Students complete practice calculations using this equation to determine the power of household appliances.

The lesson also introduces the power equation in terms of current and voltage: P=I×V. Students apply this equation to calculate the power output of electrical devices when given current and voltage values. The lesson includes guided examples and independent practice questions to develop problem-solving skills.

In the resistance heating section, students learn that when a current flows through a resistor or a wire, some electrical energy is converted into heat due to collisions between free electrons and metal ions. This process is essential in devices such as electric kettles, filament light bulbs, and electric heaters. The equation for power dissipation due to resistance heating is introduced: P = I2R where P is power, I is current, and R is resistance. Students complete calculations to determine the heat produced in different circuit components and discuss how this affects the efficiency of electrical appliances.

This editable PowerPoint (.pptx) file is designed for AQA GCSE Physics students. Updated in February 2025, it includes structured explanations, practice questions, and real-world applications, making it an essential resource for understanding electrical power, energy transfer, and resistance heating in GCSE Physics.

Get this resource as part of a bundle and save up to 54%

A bundle is a package of resources grouped together to teach a particular topic, or a series of lessons, in one place.

Bundle

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!

£12.00

Review

5

Something went wrong, please try again later.

faye_hadlington

3 months ago
5

This is a very good resource. It covers everything in detail and provides lots of practice questions. Thanks!

to let us know if it violates our terms and conditions.
Our customer service team will review your report and will be in touch.