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Byju's Answer
Standard XIII
Physics
Impedance
An alternatin...
Question
An alternating current of frequency 'f' is flowing in a circuit containing a resistance R and a choke L in series. The impedance of this circuit is
A
R
+
2
π
f
L
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B
√
R
2
+
4
π
2
f
2
L
2
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C
√
R
2
+
L
2
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D
√
R
2
+
2
π
f
L
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Solution
The correct option is
B
√
R
2
+
4
π
2
f
2
L
2
Z
=
√
R
2
+
X
2
L
,
X
L
=
ω
L
and
ω
=
2
π
f
∴
Z
=
√
R
2
+
4
π
2
f
2
L
2
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