Magnetic field due to currentHard
Question
In the following hexagons, made up of two different material P and Q. current enters and leaves from points X and Y respectively. In which case the magnetic field at its centre is not zero
Options
A.
B.
C.
D.
Solution
In configurations (C) and (D) , equal currents flow in each arm . Hence 
at center will be zero.
at center will be zero. Create a free account to view solution
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