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    cheenu2229 Posts: 2, Reputation: 1
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    Jun 29, 2013, 09:19 AM
    answers to all physics problems for free
    a long straight wire carrying a current of 30A is placed in an externl uniform magnetic field of 4X10^-4T parallel to the current. Find the magnitude of resultant magnetic field at a pint 2cm away from the wire.

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