Resistance of a Wire vs. Diameter and Length - Electricity Physics GCSE
This physics tutorial explains how the resistance of a wire depends on its diameter.
The larger the diameter, the more paths there are for charge carriers (electrons) to flow down, and so the easier it is for them to flow.
Resistance is defined as how much potential difference (think 'electrical push' or 'pressure difference') is needed to make 1 amp of current flow.
So a high resistance means you need a high potential difference just to get 1A to flow.
A long length of wire will have a high resistance. The electrons continue to move and flow just as quickly, but they will need to start with a lot more energy at the beginning of the wire and they will then transfer this into thermal energy as they go through the wire.
Potential difference is actually the energy difference of each coulomb (a 'bag' of electrons) as they enter a component compared to when they leave the component.
Subscribe for more physics tutorials: http://bit.ly/Subscribe-Physics-Ninja
Visit GCSEPhysicsNinja.com to learn more about electricity at https://gcsephysicsninja.com/lessons/electricity/
Видео Resistance of a Wire vs. Diameter and Length - Electricity Physics GCSE канала Wedgwood Tutors
The larger the diameter, the more paths there are for charge carriers (electrons) to flow down, and so the easier it is for them to flow.
Resistance is defined as how much potential difference (think 'electrical push' or 'pressure difference') is needed to make 1 amp of current flow.
So a high resistance means you need a high potential difference just to get 1A to flow.
A long length of wire will have a high resistance. The electrons continue to move and flow just as quickly, but they will need to start with a lot more energy at the beginning of the wire and they will then transfer this into thermal energy as they go through the wire.
Potential difference is actually the energy difference of each coulomb (a 'bag' of electrons) as they enter a component compared to when they leave the component.
Subscribe for more physics tutorials: http://bit.ly/Subscribe-Physics-Ninja
Visit GCSEPhysicsNinja.com to learn more about electricity at https://gcsephysicsninja.com/lessons/electricity/
Видео Resistance of a Wire vs. Diameter and Length - Electricity Physics GCSE канала Wedgwood Tutors
Показать
Комментарии отсутствуют
Информация о видео
Другие видео канала
![How to learn GCSE physics equations](https://i.ytimg.com/vi/ZBvoJ9ES6fM/default.jpg)
![Uses of Lenses in Optical Devices - The Camera and Magnifying Glass](https://i.ytimg.com/vi/gpMylvTsWKY/default.jpg)
![Types of Lenses - Physics of Light](https://i.ytimg.com/vi/jwMdmbutBEI/default.jpg)
![Electrical Energy Formula - Potential Difference and Charge - GCSE Physics](https://i.ytimg.com/vi/pPZ6NVtS-v8/default.jpg)
![Physics Prefixes - Really Small and Really Big - Scientific Notation](https://i.ytimg.com/vi/0QHk8F4hrEk/default.jpg)
![Work Done by a Constant Force - Energy Transfer Physics](https://i.ytimg.com/vi/QQ6Qk9F8zIc/default.jpg)
![How to Measure the Time Period of a Pendulum - GCSE Physics](https://i.ytimg.com/vi/T9G0orM9i48/default.jpg)
![Refractive Index Calculation Formula - GCSE Physics](https://i.ytimg.com/vi/9pU9OKB9pDo/default.jpg)
![Thermal Capacity and Specific Heat - Physics Calculation](https://i.ytimg.com/vi/xf5CcRYrAxs/default.jpg)
![Static Pressure Calculation - Physics of Pressure](https://i.ytimg.com/vi/-b5Jr9t5wIM/default.jpg)
![Atom and Subatomic Particles - GCSE Physics Flashcard](https://i.ytimg.com/vi/U287Bva4XTg/default.jpg)
![Difference Between Boiling and Evaporation - Thermal Physics](https://i.ytimg.com/vi/qL2ct9d_cMc/default.jpg)
![GCSE Physics - Temperature and Particles](https://i.ytimg.com/vi/EJPM8MBwlKI/default.jpg)
![What is Half Life - Radioactive decay graph and calculation - GCSE Physics](https://i.ytimg.com/vi/7LRsDrHGLX0/default.jpg)
![How To Calculate Kinetic Energy - Physics GCSE](https://i.ytimg.com/vi/2NLFnuuSkSo/default.jpg)
![GCSE Physics - Heating a Gas at a Constant Pressure](https://i.ytimg.com/vi/Ht6C3MQVZbw/default.jpg)
![GCSE Physics - AC Voltage Generator Output vs. Time](https://i.ytimg.com/vi/BASC6u7_E-g/default.jpg)
![Optical Fibre Uses in Communications - Advantages - Wave Physics](https://i.ytimg.com/vi/trWxFkDpBf8/default.jpg)
![How Does a Thermocouple Work? Advantages vs a Thermometer](https://i.ytimg.com/vi/882BqC1mYyc/default.jpg)
![Hooke's Law Physics Problems - Spring Constant Calculation](https://i.ytimg.com/vi/gj5I2hRPEKk/default.jpg)
![Half Life Physics Example - GCSE Physics](https://i.ytimg.com/vi/_66MAKtaQgk/default.jpg)