Questions
A square conducting loop of side length L carries a current I. The magnetic field at the center of the loop is
detailed solution
Correct option is C
Magnetic field at the centre due to either armB1=μ04π×I(L/2)sin45°+sin45° =μ04π×22ILB=4B1=4×μ04π×22IL i.e., B∝1LField at centre due to the four arms of the squareSimilar Questions
A current carrying wire is placed B in the grooves of an insulating semicircular disc of radius ‘R’, as shown in figure. The current enters at point A and leaves from point B. Determine the magnetic field at point D.
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