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  • Measuring electric current diagram
    Rights: The University of Waikato Te Whare Wānanga o Waikato Published 20 December 2016 Size: 61 KB Referencing Hub media

    1 ampere is the current in two very long parallel wires 1 m apart that gives rise to a magnetic force per unit length of 2 x 10-7 N/m.

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