Tātai Ātete Hiko
I roto i te tuhinga mō te ture a Ohm, kua puta he tātai e whakaatu ana i te whanaungatanga i waenga i te ngaohiko hiko (V), te iahiko hiko (I) me te ātete hiko (R). Mā te pāngarau, ka whakaaturia mā te whārite:
E whakaatu ana tēnei whārite he rite tonu te ātete hiko (R) ki te ngaohiko (V) me te rite whakamuri ki te iahiko (I). Ko te nui ake o te ngaohiko, ko te nui ake o te ātete. I tetahi atu taha, ko te nui ake o te iahiko, ko te nui ake o te ātete. Ka whakamāramahia e tēnei whārite te ture a Ohm ina pumau te ātete (R). Mena kāore te ātete i te pumau, kāore tēnei whārite e whakamārama i te ture a Ohm engari e whakamārama ana i te ātete o te kaiārahi hiko.
I roto i te tuhinga ko te Ture a Ohm te taitara, ka whakamāramahia hoki te whanaungatanga i waenga i te ātete o te arataki (R), te ātete o te arataki (ρ), te roa o te arataki (l) me te horahanga whakawhiti-wāhanga o te arataki (A) . Mā te pāngarau, ka whakaaturia i roto i te whārite:
I runga i tēnei whārite, ka whakatauhia ko te ātete he rite tonu ki te ātete motuhake me te roa o te ara iahiko, engari he rite whakamuri ki te horahanga whakawhiti o te ara iahiko. Arā, ka piki ake te ātete i te pikinga ake o te ātete motuhake me/ranei te roa o te ara iahiko. Ka heke te ātete i te pikinga ake o te horahanga whakawhiti o te ara iahiko.
Mena he pumau te roa o te arataki (l) me te horahanga whakawhiti-wāhanga (A), ko te ātete (R) ka whakawhirinaki anake ki te ātete (ρ). I te pikinga o te ātete, ka piki ake te ātete. I te hekenga o te ātete, ka heke te ātete hiko. He rite tonu te uara ātete o ia arataki ki te pāmahana. Mena he teitei ake te pāmahana, ka piki ake te ātete, ki te iti iho rānei te pāmahana, ka heke te ātete.
Te kawe i te hiko
Ko te whakahurihanga o te ātete ko te kawe hiko. He rite whakahurihanga te kawe hiko ki te ātete, e ai ki te whārite i raro nei:
Ki te whakaaturia i roto i ngā tikanga o te kawe hiko, ka huri te whārite 2 ki:
I runga i tēnei whārite, ka whakatauhia ko te ātete hiko he rite whakamuri ki te kawe hiko, ki te nui ake te kawe hiko o te kaiwhakahaere, ka iti ake te ātete, ki te iti ake rānei te kawe hiko o te kaiwhakahaere, ka nui ake te ātete.
Kei te ripanga i raro nei ngā uara ātete o ia rauemi.
Wāhanga
Ko te waeine o te ngaohiko hiko ko te Volt, ko te waeine o te iahiko hiko ko te Ampere, nō reira ko te waeine o te ātete ko te Volt/Ampere. Ka kiia hoki a Volt/Ampere ko te Ohm, e tohuhia ana e Ω, hei whakahonore i a Georg Simon Ohm (1789-1854), he tohunga ahupūngao Tiamana. Haunga a Ohm, ka whakamahia hoki ngā waeine kiloohm me megaohm. 1 kiloohm (kΩ) = 1000 Ω = 103 Ω , ko te 1 megaohm (MΩ) = 1000.000 Ω = 106 Ω.
taputapu ine
Ko te taputapu e whakamahia ana hei ine i te ātete hiko he ohmmeter. Kua whakauruhia tēnei taputapu ine ki roto i te multimeter, he taputapu hei ine i te ngaohiko, te iahiko, me te ātete. Ka matapakihia ngā ohmmeter i roto i te tuhinga mō ngā taputapu ine hiko.
