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Byju's Answer
Standard XII
Physics
Conductivity and Resistivity
The unit of ...
Question
The unit of
I
q
Z
is:
I
=
Current,
Z
=
Electrical Impedance and
q
=
Charge
A
Newton
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B
Dyne
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C
Joule
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D
None
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Solution
The correct option is
A
Joule
The given relation is
I
q
Z
, since
q
=
I
t
.
Expression is
I
2
Z
t
.
This is
E
l
e
c
t
r
i
c
a
l
P
o
w
e
r
X
t
i
m
e
. Hence the unit is
J
o
u
l
e
.
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Similar questions
Q.
Consider the
L
C
R
circuit shown in Fig. Find the net current
i
and the phase of
i
. Show that
i
=
V
Z
. Find the impedance
Z
for this circuit.
Q.
If
z
=
(
3
+
7
i
)
(
p
+
i
q
)
, where
p
,
q
∈
I
−
{
0
}
, is a purely imaginary, then minimum value of
|
z
|
2
is
Q.
The unit and dimensions of impedance in terms of charge Q are
Q.
If
z
=
x
−
i
y
and
z
1
/
3
=
p
+
i
q
, then
(
x
p
+
y
q
)
/
(
p
2
+
q
2
)
=
Q.
In case of AC circuits the relation
V
=
i
Z
,
where Z is impedance, can directly be applied to:
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