"Generator" electromagnetic phenomena PPT courseware

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Lu Jiao Edition Ninth Grade Physics Volume 2	pptx	6 MB

"Generator" electromagnetic phenomena PPT courseware

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"Generator" electromagnetic phenomena PPT courseware

[Principle] Electromagnetic induction phenomenon (conversion of mechanical energy into electrical energy)

【Alternating current】A current that changes direction periodically is called alternating current.

Period (T): the time it takes for the coil to rotate once (s)

Frequency (f): Number of coil rotations per second (Hz)

【think】

①What are the characteristics of the alternating current provided by my country's State Grid?

The cycle of alternating current in my country is ____s, the frequency is ____Hz, that is, there are ____ cycles in 1 second, the coil rotates ____ times, the direction of the alternating current changes ____ times per cycle, and the direction of the current changes _ in 1 second ___Second-rate.

②Why does the State Grid provide such high-frequency current?

【type】

A. Alternator (power source that generates alternating current)

B. DC generator (power source that generates direct current)

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For more information about the "Electromagnetic Phenomena Generator" PPT courseware, please click the "Electromagnetic Phenomenon ppt Generator ppt" tab.

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"Why Generators Can Generate Electricity" PPT Courseware of Electric Motors and Generators 3 Review Review If the + pole of the power supply is connected to the wire, the observable phenomenon is ___________, and when the circuit is disconnected, _______________ can be observed. 1. Understand the generator Activity 2: Disassemble the generator...

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"Generator" electromagnetic phenomena PPT courseware