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Tardigrade
Question
Physics
The net magnetic flux through any closed surface, kept in a magnetic field is
Q. The net magnetic flux through any closed surface, kept in a magnetic field is
199
125
Electromagnetic Induction
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A
zero
B
4
π
μ
0
C
4
π
μ
0
D
π
4
μ
0
Solution:
According to Gauss's theorem in magnetism, surface integral of magnetic field intensity over a surface (closed or open) is always zero.
Number of field lines entering and going out from
S
are equal. So, net flux through
S
is zero.
∮
B
⋅
d
A
=
0