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A long straight wire in the horizontal plane carries a current of 50 A in north to south direction . Give the magnitude and direction of B at a point 2.5 m east of the wire . |
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Answer» Solution :`I= 50 A, r = 2.5 m` `B = (mu_0 I)/(2 PI r) = (4pi xx10^(-7) xx 50)/(2 pi xx 2.5) = 4 xx 10^(-6) T` UPWARDS , (due to the WIRE ALONE) |
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