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25 December, 22:11

A very long wire generates a magnetic field of 0.0020x 10^-4 T at a distance of 10 mm. What is the magnitude of the current? A) 2.0 mA B) 3100 mA C) 4000 mA D) 1.0 mA

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  1. 25 December, 22:29
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    2*10^-5

    Explanation:

    B=IL

    I=B/L

    I=0.0020*10^-4/10

    I=2*10^5
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