A long straight wire carrying a current of 30A is placed in an external uniform magnetic field of induction \[4\times 10^{-4} T\]. The magnetic field is acting parallel to the direction of current. The magnitude of the resultant magnetic induction in tesla at a point 2.0 cm away from the wire is \[\left( \mu_{0}=4\pi\times 10^{-7}H/m \right)\]:

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