[題目] RLC電路
[來源]Holliday CH31 87題 (課本習題、考古題、參考書...)
[題目]The ac generator in Fig. 31-40 supplies 120 V at 60.0 Hz. With theswitch
as in the diagram, the current leads the generator emf by 20.degree. With the
switch in position 1, the currentlags the generator emf by 10.degerr. When the
switch is inposition 2, the current amplitude is 2.00 A. What are (a) R, (b)
L,and (c) C?
圖 http://ppt.cc/V09N
εm tan 10
L=----- (1-2----------) (我看不懂這是怎來的 請各位幫我解答)
wd*I2 tan(-20)
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