38 Alternating Current

38 Alternating Current - Thomas Edison 7. List a few...

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THE MECHANICAL UNIVERSE Name: Mai Nguyen Video 38. Alternating Current Class: PHYS 2426 1. In what way is practically all electric power generated? Alternating current; spin around magnetic field. 2. What is the energy source for hydroelectric power? Water 3. What is alternating current? an oscillating current produced by a voltage that rises and falls like a sine wave. 4. What type of current did Thomas Edison promote? Alternating current 5. When did Tesla arrive in New York? 1884 6. Who invented the first motion picture camera?
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Unformatted text preview: Thomas Edison 7. List a few examples of resonance: Radio and television. 8. At low frequency, which RLC circuit element dominates? Capacitor 9. At what frequency does the most current flow in a circuit? At the resonant frequency. 10. Why was Teslas method better? Power; the same power can be transmitted at high current and low voltage, and vice versa. 11. What did Marconi invent? The radio 12. Did Tesla die wealthy or almost penniless? Almost penniless...
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