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Byju's Answer
Standard XII
Physics
Capacitor in an AC Circuit
Phase differe...
Question
Phase difference between voltage and current in a capacitor in AC circuit is _____.
A
π
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B
0
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C
π
2
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D
π
3
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Solution
The correct option is
C
π
2
Current in the capacitor leads by
90
o
ahead of voltage whereas lags behind the voltage by
90
o
in inductor.
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0
Similar questions
Q.
Match List I with list II
List-I
List- II
(a) Phase difference
between current
and voltage in a
purely resistive
AC circuit
(i) π/2; current leads voltage
(b) Phase difference between
current and voltage in a
pure inductive AC
circuit
(ii) zero
(c) Phase difference
between current
and voltage in a
pure capacitive
AC circuit
(iii) π/2; current lags voltage
(d) Phase difference
between current
and voltage in an
LCR series circuit
(iv)
tan
−
1
(
X
C
−
X
L
R
)
Q.
In a series AC RLC circuit, when the inductor is removed from the circuit, the phase difference between the voltage and the current in the circuit is
π
/
3
. If instead, the capacitor is removed from the circuit, the phase difference is again
π
/
3
. The power factor of the circuit is -
Q.
An
A
C
voltage
V
=
V
0
sin
100
t
is applied to the circuit, the phase difference between current and voltage is found to be
π
/
4
, then:
Q.
A series of
LCR
circuit is connected to an
AC
voltage source. When
L
is removed from the circuit, the phase difference between current and voltage is
π
3
. If instead
C
is removed from the circuit, the phase difference is again
π
3
between current and voltage. The power factor of the circuit is:
Q.
Show that the current leads the voltage in phase by
π
/
2
in an
A
C
circuit containing an ideal capacitor.
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