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EasyPhysicsMagnetic field
+4 / -1
Two concentric coplanar circular loops of radii a and b carry currents x and y respectively in opposite directions (one clockwise and the other anticlockwise). magnitude of net magnetic field at the centre of the loops is half of that due to x alone at the centre. If a = 4b, then the value of x/y is
A
1/4
B
4/3
C
5/4
D
8/3
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