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# 5.2. Heating Effect of an Electric Current

This section is CHUNKY. That is, it builds heavily upon all the electricity stuff from GCSE and piles on a huge amount more content. Initially this one certainly feels like a mountain, but with a bit of practice the problems eventually 'click' and become second nature (...hopefully).

Resistance and Ohm's Law

#### Resistance and Ohm's Law

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PHET have a brilliant circuit simulation programme. Try building some series and parallel circuits with multiple components and looking at the effect on current and voltage.

## Video Lessons

 Chris Doner Resistance IB Specific Khan Academy Ohm's Law Intro Resistors in Series Resistors in Parallel More complex circuits Physics Online Resistance and Ohm's Law Resistance in Series Resistance in Parallel Practical Tips Science Shorts Electricity Basics (Ohm's Law) Potential Dividers/ Resistor Combinations Study Nova Ohm's Law

## Resources

 IB Physics Topic 5 Notes IB-Physics.net Chapter 5 Summary IB Revision Notes Isaac Physics Ohm's Law Introduction Mr. G 5.2 Teaching Notes 5.2 Student Notes Physics and Maths Tutor Electricity Definitions Electricity Key Points Electricity Detailed Notes Electricity Flashcards A Level Resources - content slightly different

## Questions

 Cambridge University Press Topic 5: Add Qs Topic 5: Add Qs MS Topic 5: MCQs CUP Website Link Freely available online Grade Gorilla 5.2 (Circuit Basics) MCQ Topic 5 (Circuits) End Quiz Quick IB Specific Mixed MCQs Isaac Physics Combinations of Resistors Mr. G 5.2 Formative Assessment Topic 5 Summary Qs IB Specific Questions Physics and Maths Tutor Resistance (OCR) Resistance MS (OCR) Resistor Networks (Edexcel 1) Resistor Networks MS (Edexcel 1) A-Level Qs: overlapping content Physics and Maths Tutor Current & Resistance (AQA 1) Current & Resistance MS (AQA 1) MCQ Current Electricity (AQA 2) MCQ Current Electricity MS (AQA 2) A-Level Qs: overlapping content
IV Characteristics

#### IV Characteristics

There are 5 of these SUVAT equations.

## Video Lessons

 Chris Doner Resistance (IV Characteristics) IB Specific Physics Online IV Characteristics Practical Tips (Non Ohmic) The LDR The Thermistor

## Resources

 IB Physics Topic 5 Notes IB-Physics.net Chapter 5 Summary IB Revision Notes Isaac Physics Electric Components Level 5/6 Beyond IB Mr. G 5.2 Teaching Notes 5.2 Student Notes Physics and Maths Tutor Electricity Definitions Electricity Key Points Electricity Detailed Notes Electricity Flashcards A Level Resources - content slightly different

## Questions

 Cambridge University Press Topic 5: Add Qs Topic 5: Add Qs MS Topic 5: MCQs CUP Website Link Freely available online Grade Gorilla 5.2 (Circuit Basics) MCQ Topic 5 (Circuits) End Quiz Quick IB Specific Mixed MCQs Mr. G 5.2 Formative Assessment Topic 5 Summary Qs IB Specific Questions Physics and Maths Tutor IV Characteristics (AQA 2) IV Characteristics MS (AQA 2) A-Level Qs: overlapping content

Kirchoff's Laws

## Kirchoff Practice

Kirchoff's Laws are a tricky beast to get your head around, yet they are hugely important in circuit analyses so it's worth spending some time making sure you are confident.

For practice, I can't rate the following simulation highly enough. Randomise the circuit setup by clicking 'Change Circuit', then use Kirchoff's Current and Voltage Laws to calculate the unknown currents. If you can do 5 in a row then you've got it sorted!

## Video Lessons

 Chris Doner Circuit Analysis Potential Dividers IB Specific Khan Academy Kirchoff's Current Law Kirchoff's Voltage Law Physics Online Kirchoff's 1st Law Kirchoff's 2nd Law Potential Dividers Solving Circuit Problems Science Shorts Kirchoff's Laws Study Nova Kirchoff's Laws Circuit Analogy 1 Circuit Analogy 2 Circuit Analogy 3

## Resources

 IB Physics Topic 5 Notes IB-Physics.net Chapter 5 Summary IB Revision Notes Isaac Physics Kirchoff's Laws Mr. G 5.2 Teaching Notes 5.2 Student Notes Physics and Maths Tutor Electricity Definitions Electricity Key Points Electricity Detailed Notes Electricity Flashcards A Level Resources - content slightly different

## Questions

 Cambridge University Press Topic 5: Add Qs Topic 5: Add Qs MS Topic 5: MCQs CUP Website Link Freely available online Dr French's Eclecticon Electrical Circuits Electrical Circuits Solutions Link to Dr French's Site Extension: Pre-University Material Grade Gorilla 5.2 (Circuit Basics) MCQ Topic 5 (Circuits) End Quiz Quick IB Specific Mixed MCQs Isaac Physics Kirchoff's Laws Potential Dividers Mr. G 5.2 Formative Assessment Topic 5 Summary Qs IB Specific Questions Physics and Maths Tutor DC Circuits (OCR) DC Circuits MS (OCR) DC Circuits (AQA 1) DC Circuits MS (AQA 1) A-Level Qs: overlapping content Physics and Maths Tutor Electricity (Edexcel 1) Electricity MS (Edexcel 1) Electricity (Edexcel 2) Electricity MS (Edexcel 2) A-Level Qs: overlapping content Physics and Maths Tutor Potential Divider (AQA 2) Potential Divider MS (AQA 2) Circuits (AQA 2) Circuits MS (AQA 2) A-Level Qs: overlapping content
Resistivity

#### Resistivity

Resistivity is a materials property.

## Video Lessons

 Chris Doner Resistance (Resistivity) IB Specific Khan Academy Resistivity and Conductivity Conductivity not on IB Physics Online Resistivity Resistance and Temperature Practical Tips Science Shorts Resistivity Practical Tips Study Nova Resistivity

## Resources

 IB Physics Topic 5 Notes IB-Physics.net Chapter 5 Summary IB Revision Notes Isaac Physics Resistivity Mr. G 5.2 Teaching Notes 5.2 Student Notes Physics and Maths Tutor Electricity Definitions Electricity Key Points Electricity Detailed Notes Electricity Flashcards A Level Resources - content slightly different

## Questions

 Cambridge University Press Topic 5: Add Qs Topic 5: Add Qs MS Topic 5: MCQs CUP Website Link Freely available online Grade Gorilla 5.2 (Circuit Basics) MCQ Topic 5 (Circuits) End Quiz Quick IB Specific Mixed MCQs Mr. G 5.2 Formative Assessment Topic 5 Summary Qs IB Specific Questions Physics and Maths Tutor Resistivity (Edexcel 1) Resistivity MS (Edexcel 1) Resistivity (AQA 2) Resistivity MS (AQA 2) A-Level Qs: overlapping content
Power Dissipation

#### Power Dissipation

We previously look at power in Section 2.3, specifically mechanical power when doing work. Here we come back to this idea with a bit of a look into electrical power.

## Video Lessons

 Chris Doner Power in Electric Circuits IB Specific Khan Academy Electric Power Physics Online Electrical Power Electrical Work Done Study Nova Power Dissipation

## Resources

 IB Physics Topic 5 Notes IB-Physics.net Chapter 5 Summary IB Revision Notes Isaac Physics Electrical Power Mr. G 5.2 Teaching Notes 5.2 Student Notes Physics and Maths Tutor Electricity Definitions Electricity Key Points Electricity Detailed Notes Electricity Flashcards A Level Resources - content slightly different

## Questions

 Cambridge University Press Topic 5: Add Qs Topic 5: Add Qs MS Topic 5: MCQs CUP Website Link Freely available online Dr French's Eclecticon Electrical Circuits Electrical Circuits Solutions Link to Dr French's Site Extension: Pre-University Material Grade Gorilla 5.2 (Circuit Basics) MCQ Topic 5 (Circuits) End Quiz Quick IB Specific Mixed MCQs Mr. G 5.2 Formative Assessment Topic 5 Summary Qs IB Specific Questions