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Standard XII
Physics
Kirchoff's Voltage Law
Question
The potential difference
(
V
A
−
V
B
)
between the points A and B in the given figure is.
+ 9 V
-3 V
+3 V
+6 V
A
+ 9 V
B
-3 V
C
+3 V
D
+6 V
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Solution
Verified by Toppr
Given :
I
=
2
A
Using Kirchhoff's law
V
A
−
I
(
2
)
−
3
−
I
(
1
)
−
V
B
=
0
∴
V
A
−
2
×
2
−
3
−
2
×
1
−
V
B
=
0
OR
V
A
−
9
−
V
B
=
0
⟹
V
A
−
V
B
=
+
9
V
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