AC Circuit Resonance
Given:
Find:
A
I
9
.
3
?
max
I
v
103
max
,
GEN
V
mH
L
9
.
2
F
C
9
.
4
f
f
2
max
A generator with a variable frequency is connected to a resistor, capacitor, and an inductor with
values as shown. The frequency is adjusted until
the current is a maximum
value of 3.9 A.
Now the frequency is doubled.
Find the new maximum current in the circuit.
Solutions
a.)
To find
we can use the following formula:
max
I
the current is a maximum = resonant frequency or resonant
LC
1
0
f
f
2
max
f
f
2
2
max
max
LC
f
2
2
2
2
0
max
I
V
R
GEN
max
since
0
C
L
X
X

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