20.2 Physics Flashcards
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What’s another way to induce a current?
Change the orientation of the loop with respect to the magnetic field
What happens when you change the orientation of the loop with respect to the magnetic field?
The mechanical energy used to turn the loop is changed into electrical energy
What type of emf does a generator produce?
A continuously changing one
When is the emf at its maximum and minimum in an ac generator?
- Maximum when parallel
- Minimum when perpendicular
Opposite of previous lessons
Go through page 700 and 701
What’s an alternating current?
An electric current that changed direction at regular intervals
What is the angular frequency of rotation?
NAB3sin3t
3 but on it’s side
What does the angular frequency of rotation equal to?
2pif
Where do AC generators get their name from?
Alternating Current generators
Do resistors do their job of resisting the motion of charges in dc circuits, alternating currents, and emfs?
Yup. They work regardless of whether they’re in any of the above to resist movement of charges
What converts ac into dc generators?
A split slip ring
Go back to page 703 and make flashcards boi
How is an alternating emf graphed?
It’s depicted by a sine wave
How is the output for a dc generator graphed?
It’s depicted by a sine wave with the negative parts made positive
What are motors?
Motors are machines that convert electrical energy unto mechanical energy
