I roto i te electromagnetism, ko te nui o te hiko e haere ana i roto i tetahi waahanga whiti o te kaikawe i ia wa e kiia ana ko te kaha o naianei, ko te hiko hiko noa ranei. Ko te tohu mo te au ko I, ko te waeine he ampere (A), he “A” noa ranei (André-Marie Ampère, 1775-1836, French phys...
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