The Generator Effect and Induction | GCSE Physics
The generator effect occurs when a conductor moves through a magnetic field, inducing a potential difference.
How can you increase the size of the induced potential difference?
What is The Generator Effect and Induction | GCSE Physics?
"The production of a potential difference across an electrical conductor when it is exposed to a varying magnetic field."
Magnetic field lines always point from ____.
Why are step-up transformers used in the National Grid?
Increasing the current through a solenoid will ____ its magnetic field.
What happens to an electromagnet when the current is turned off?
Inducing Current
Induction: Moving a wire in a magnetic field creates a potential difference.
If the circuit is complete, a current is induced.
Factors to increase PD: Move wire faster, use stronger magnets, use more turns of wire.
The induced current creates a magnetic field that opposes the original change.
Lenz's Law Alert: The induced magnetic field always acts to OPPOSE the movement that created it. This is why generators get harder to turn as more current is drawn!
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