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0
cos 100
3
u U t
π
π
 
= −
 ÷
 
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4
2.10
π

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5cos 100
6

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6
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PQ-*81-(,9-$
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1 2
2
LC
ω + ω =
//
1 2
1
.
LC
ω ω =
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1 2
2
LC
ω + ω =
/S/
1 2
1
.
LC

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u 2cos 100 t V
AC
3
π
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 
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1
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3
2
π
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=
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π
=

4
10

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