MagnetismMedium
Question
A steady current is set up in a cubic network composed of wires of equal resistance and length d as shown in figure. What is the magnetic field at the centre P due to the cubic network ?
Options
A.
B.
C.0
D.
Solution
From symmetry we can easily say that net magnetic field at P will be zero as vector addition and every vertical opposite side (DG , BE) will cancel the effect of other one.
Upper square will cancel the effect of lower square
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