What this topic covers
Topic 13: Electromagnetic induction has 2 subtopics:
- Transformers and the National Grid
- Generating current by induction
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GCSE Edexcel Higher Combined Science Physics · Topic 11 of 13
Topic 13: Electromagnetic induction – GCSE Edexcel Higher Combined Science Physics revision notes
Choose a subtopic. Electromagnetic induction, transformers and the National Grid. 5 lessons in 2 subtopics.
Revise Topic 13: Electromagnetic induction for GCSE Edexcel Higher Combined Science Physics, including Transformers and the National Grid.
5
Lessons
2
Subtopics
Topic 13: Electromagnetic induction lessons by subtopic
5 lessons, grouped by subtopic.
Transformers and the National Grid
- Induced potential difference and opposing change
- How transformers change alternating voltage
- Transformer power in an ideal transformer
Generating current by induction
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Frequently asked questions
What is Topic 13: Electromagnetic induction?
Electromagnetic induction, transformers and the National Grid. 5 lessons in 2 subtopics.
What is the National Grid?
The National Grid is a system of cables and transformers linking power stations to consumers across the country. The National Grid Introduction notes cover this in full.
What is a transformer?
A transformer is a device that uses electromagnetic induction to change the voltage of an alternating current supply. The How transformers change alternating voltage notes cover this in full.
What is the generator effect?
The generator effect is when a potential difference is induced across a conductor that moves relative to a magnetic field, or when the magnetic field around it changes. The Induced potential difference and opposing change notes cover this in full.
How does a transformer work?
Alternating current in the primary coil creates a changing magnetic field in the iron core. The How transformers change alternating voltage notes cover this in full.
How do wind turbines generate electricity?
Wind turbines use the generator effect: the wind turns the blades, which rotate a generator inside the nacelle. The Induced potential difference and opposing change notes cover this in full.
What is magnetic flux?
Magnetic flux is a measure of how much magnetic field passes through an area. The Induced potential difference and opposing change notes cover this in full.
What is a power station?
A power station is a facility that generates electrical energy from various sources like fossil fuels, nuclear power, or renewable sources such as wind and solar. The National Grid Introduction notes cover this in full.
How do transformers work in physics?
In a transformer, AC in the primary coil creates a changing magnetic field in the iron core; this field links with the secondary coil and induces a voltage there. The How transformers change alternating voltage notes cover this in full.