Te Ture a Ampere
I whakaarohia e te kaipūtaiao Wīwī a Andre Marie Ampère (1775–1836) tētahi whanaungatanga whānui i waenga i te iahiko e rere ana i roto i tētahi kaiārahi me te papa aukume e hangaia ana i tōna taha. Koinei te Ture a Ampère. Ko te whārite i raro nei e whakaatu ana i te ture a Ampère.
—–> Te Ture a Ampere
Ko te tapeke o ngā wāhanga (Σ) o te papa aukume (B) e whakarara ana ki te roa waeine o te kaiārahi, e whakareatia ana ki te roa waeine o te kaiārahi (∆l), he ōrite ki te hua o µ o (µ o = 4π x 10 -7 Tm/A) me te iahiko (I).
Ka whakaputahia e te arataki porowhita te MAukume Porangi
Mena he porowhita te ara iahiko, ko te tapeke o ngā waeine roa o te ara iahiko ko te porowhita o te porowhita, nō reira ka huri te tātai ture a Ampere i runga ake nei ki:
—–> Te tātai ture a Ampere mō ngā ara iahiko porowhita
Whakaahuatanga tātai:
B = papa aukume (Tesla)
µ o = Te pūmau aukume, te uruhanga rānei o te wāhi kore utu (4π x 10 -7 T m/A)
I = Iahiko hiko (Ampere)
r = te pūtoro o te porowhita (mita)
Ngā Take Solenoid Papa Aukume
He pōkai waea roa te solenoid he maha ngā koropiko, e whakaaturia ana i te ahua i raro nei.
I = Iahiko hiko, B = Papa aukume
E tohu ana ngā pere i te ahunga o te ia hiko me te ahunga o te papa aukume.
Ko te tātai mō te papa aukume i hangaia e te solenoid ko:
—–> Te tātai ture a Ampere mō te ara iahiko āhua-solenoid
Whakaahuatanga tātai:
B = papa aukume (Tesla)
µ o = Te pūmau aukume, te uruhanga rānei o te wāhi kore utu (4π x 10 -7 T m/A)
n = n/L = Te maha o ngā koropiko (n) mō ia roanga waeine (L)
I = Iahiko hiko (Ampere)
Whakamāramatanga o te 1 Ampere
Ko te Ampere he waeine o te iahiko hiko, kāore tēnei rahinga e tū motuhake engari e pā ana hoki ki ētahi atu rahinga ā-tinana. Ko te kaupapa o te kaha aukume i waenga i ngā waea e rua e mau ana i te iahiko hiko he whakamārama i te tātai e kī ana i te whanaungatanga i waenga i te kaha aukume mō ia waeine roa o te kaiārahi (F/L) me te iahiko hiko (I) i roto i ia kaiārahi me te tawhiti i waenga i ngā kaiārahi e rua (l) , e whakaaturia ana i raro nei.
Mena ko te iahiko e rere ana i roto i ia ara iahiko he 1 Ampere, ā, ko te tawhiti i waenganui i ngā ara e rua he 1 mita, ko te uara F/L ko:
I runga i te uara F/L i runga ake nei, ko te 1 Ampere te iahiko e rere ana i roto i ia o ngā ara iahiko e rua e whakarara ana, e wehea ana e te tawhiti o te 1 mita, ā, ka puta he kaha aukume o te 2 x 10 -7 N/m ara iahiko.
