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Magnetic Field Due to a Straight Long Wire

A horizontal ...

Question

A horizontal wire 0.1m long carries a current of 5A. Find the magnitude and direction of the magnetic field, which can support the weight of the wire. Assume wire to be of mass $3 \times 10^{- 3}$ kg $m^{- 1}$ .

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Solution

$5.88 \times 10^{- 3} T$

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