Magnetic field due to currentHard
Question
Two long parallel wires are at a distance 2d apart. They carry steady equal current flowing out of the plane of the paper as shown. The variation of the magnetic field along the line XX′ is given by
Options
A.
B.
C.
D.
Solution
The magnetic field in between because of each will be in opposite direction
Bin between
at x = d, Bin between = 0
for x < d, Bin between =
for x > d, Bin between =
towards x net magnetic field will add up and direction will be
towards x′ net magnetic field will add up and direction will be
Bin between
at x = d, Bin between = 0
for x < d, Bin between =
for x > d, Bin between =
towards x net magnetic field will add up and direction will be
towards x′ net magnetic field will add up and direction will be
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