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VITEEE 2012 Solved Paper
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© examsnet.com
Question : 1
Total: 120
A square loop, carrying a steady current I, is placed in horizontal plane near a long straight conductor carrying a steady current
I
1
at a distance of d from the conductor as shown in figure. The loop will experience
a net repulsive force away from the conductor
a net torque acting upward perpencdicular to the horizontal plane
a net torque acting downward normal to the horizontal plane
a net attractive force towards the conductor
Validate
Solution:
F
2
=
−
F
4
F
1
=
µ
0
I
1
I
l
2
π
d
l
F
2
=
µ
0
I
1
l
2
π
(
d
+
1
)
F
1
>
F
3
F
net
=
F
1
−
F
3
So, wire attract loop.
© examsnet.com
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