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Unit 11: How do we generate electricity?
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Let us begin from the beginning. How did we chance upon this idea?
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- Electromagnetic inductionGet 5 of 7 questions to level up!
The current generated is related to the change in "magnetic flux". Let us understand flux, so we can change it and build our generator.
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- Area vectorsGet 3 of 4 questions to level up!
- Magnetic flux calculation - IGet 3 of 4 questions to level up!
- Magnetic flux calculation - IIGet 3 of 4 questions to level up!
How do we need to move the coil to produce the current? Is it necessary to even move the coil? How do we create more or less current? Faraday's law answers this and more.
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- Faraday's law - existence of induced emf-iGet 3 of 4 questions to level up!
- Faraday's law - existence of induced emf - iiGet 3 of 4 questions to level up!
- Faraday's law - magnitude of induced emf (average)Get 3 of 4 questions to level up!
Current can flow in two directions in a wire? How do we find out which one is the correct direction? And, what breaks if current flows in the other direction?
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- Lenz's law - iGet 3 of 4 questions to level up!
- Lenz's law - iiGet 3 of 4 questions to level up!
- Lenz's law - iiiGet 3 of 4 questions to level up!
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