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Byju's Answer
Standard X
Physics
Kirchoff's Junction Law
As the switch...
Question
As the switch S is closed in the circuit shown in figure, current passed
t
hrough it is
A
Zero
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B
1A
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C
2A
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D
1.6A
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Solution
The correct option is
C
2A
Let the potential at the point C be
V
.
By Kirchoff's current law:
i
1
+
i
2
=
i
3
⇒
10
−
V
4
+
5
−
V
2
=
V
−
0
2
⇒
10
−
V
+
10
−
2
V
=
2
V
⇒
20
=
5
V
⇒
V
=
4
i
3
=
V
2
=
2
A
.
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