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Physics
Physics
Problem
At a certain frequency
f
f
f
, a series RLC circuit has
X
L
=
40
Ω
X_L = 40\,\Omega
X
L
=
40
Ω
,
X
C
=
80
Ω
X_C = 80\,\Omega
X
C
=
80
Ω
and resistance
R
=
10
Ω
R = 10\,\Omega
R
=
10
Ω
. Keeping the supply voltage amplitude unchanged, the frequency is doubled to
2
f
2f
2
f
. Calculate the ratio of the current amplitudes
I
′
I
\dfrac{I'}{I}
I
I
′
at
2
f
2f
2
f
and at
f
f
f
.
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