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Two equal electroic currents are flowing...

Two equal electroic currents are flowing perpendicular to each other as shown oin the figure. AB and CD are perpendicular to each other and symeetrically placed w.r.t the currents, where do we except the resultant magnetic field to be zero ?

A

On CD

B

on AB

C

On both OD and BO

D

On both AB and CD

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The correct Answer is:
B
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