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JEEMAIN and NEET
>>
Physics
>>
Class12
>>
Moving Charges and Magentism
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Q)
Same current is flowing in three infinitely long wires along positive
x
,
y
and
z
directions. The magnetic field at the point
(
0
,
0
,
−
a
)
would be
(
a
)
μ
0
i
2
π
a
(
ˆ
i
−
ˆ
j
)
(
b
)
μ
0
i
2
π
a
(
ˆ
j
−
ˆ
i
)
(
c
)
μ
0
i
2
π
a
(
ˆ
i
+
ˆ
j
)
(
d
)
μ
0
i
2
π
a
(
ˆ
i
+
ˆ
j
+
ˆ
k
)
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