Two similar coils are placed mutually perpendicular such that their...

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Two similar coils are placed mutually perpendicular such that their centres coincide. At centre, the ratio of the magnetic field due to one coil and the resultant - magnetic field of both coils for same current will be
- (a) \( 1: \sqrt{2} \)
(b) \( 1: 2 \)
(c) \( 2: 1 \)
(d) \( \sqrt{3}: 1 \)
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