Tardigrade
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Tardigrade
Question
Physics
A steady current I goes through a wire loop PQR having shape of a right angle triangle with PQ =3 x , PR = 4 x and QR =5 x. If the magnitude of the magnetic field at P due to this loop is k ((μ0 I /48 π x )), find the value of k .
Q. A steady current
I
goes through a wire loop
PQR
having shape of a right angle triangle with
PQ
=
3
x
,
PR
=
4
x
and
QR
=
5
x
. If the magnitude of the magnetic field at
P
due to this loop is
k
(
48
π
x
μ
0
I
)
, find the value of
k
.
2348
220
JEE Advanced
JEE Advanced 2009
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Answer:
7
Solution:
B
=
4
π
5
12
x
μ
0
I
[
cos
5
3
∘
+
cos
3
7
∘
]
=
7
(
48
π
x
μ
ϕ
I
)
k
=
7