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  4. The magnetic field intensity at the centre of cubical cage of identical wires of length ‘a’ due to a current I flowing as shown in the fiigure is

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Q. The magnetic field intensity at the centre of cubical cage of identical wires of length ‘a’ due to a current I flowing as shown in the fiigure isPhysics Question Image

WBJEEWBJEE 2016

Solution:

For symmetrical current distribution, magnetic field at the centre due to all current carrying conductors will get cancelled. Hence $B_{net} =0$