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At a given place the horizontal componnent of earth's field is 0.2 G. If a vertical wire carries a current of 30 Amp upward, what is the magnitude and direction of the force on 1 meter of wire ?
Options:
(a) 6 E to W (b) `6xx10^(-3)` E to W (c) `6xx10^(-3)` E to W (d) 6`6xx10^(-4)` E to W

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