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JEE Advanced 2014 Paper 1
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Section:
Physics
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© examsnet.com
Question : 7
Total: 60
Two ideal batteries of emf
V
1
and
V
2
and three resistances
R
1
,
R
2
and
R
3
are connected as shown in the figure. The current in resistance
R
2
would be zero if
[JEE Adv 2014 P1]
V
1
=
V
2
and
R
1
=
R
2
=
R
3
V
1
=
V
2
and
R
1
=
2
R
2
=
R
3
V
1
=
2
V
2
and
2
R
1
=
2
R
2
=
R
3
2
V
1
=
V
2
and
2
R
1
=
R
2
=
R
3
Validate
Solution:
V
1
=
R
1
(
V
1
+
V
2
)
R
1
+
R
3
⇒
V
1
R
3
=
V
2
R
1
V
2
=
R
3
(
V
1
+
V
2
)
R
1
+
R
3
⇒
V
2
R
1
=
V
2
R
3
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