Te kaha aukume i waenga i ngā waea whakarara e rua – ngā raruraru me ngā otinga
1. E rua ngā ara iahiko whakarara e kawe ana i ngā iahiko I1 me I2 , e whakaaturia ana i te pikitia i raro nei. He aha te rahi me te ahunga o te kaha aukume e pāngia ana e ngā ara iahiko e rua ? (μ o = 4π. 10 -7 Wb.A -1 .m -1 )
Mōhiotia:
te hiko hiko 1 (ahau1) = 3 Āmpere
Ko te iahiko hiko 2 (I 2 ) = 5 Ampere
Ko te uruhanga o te wāhi kore utu (µ o ) = 4π x 10 -7 wb A -1 m -1
Te tawhiti i waenganui i ngā kaiārahi e rua (L) = 5 cm = 5 x 10 -2 mita
E hiahiatia ana: Te rahi me te ahunga o te kaha aukume
Rongoā:
He rerekē te ahunga o te iahiko i runga i te kaiārahi 1 ki te ahunga o te iahiko i runga i te kaiārahi 2. Ka whakamahia e ngā iahiko ārai-whakarara (i ngā ahunga rerekē) he kaha pana tetahi ki tetahi.
Te rahi o te kaha aukume:
F/l = 6 x 10 -5 Newton
2. E 20-cm te tawhiti o ngā waea whakarara e rua e kawe ana i ngā iahiko I 1 me I 2. He aha te rahi o te kaha aukume e pā ana ki ia waea (μ o = 4π. 10 -7 Wb.A -1 .m -1 )
Mōhiotia:
Ko te iahiko hiko 1 (I1) = 5 Āmpere
Ko te iahiko hiko 2 (I 2 ) = 4 Ampere
Ko te uruhanga o te wāhi kore utu (µ o ) = 4π x 10 -7 wb A -1 m -1
Te tawhiti i waenga i ngā waea e rua (L) = 20 cm = 20 x 10 -2 mita
E hiahiatia ana: Te rahi o te kaha aukume
Rongoā:
He rerekē te ahunga o te iahiko i runga i te kaiārahi 1 ki te ahunga o te iahiko i runga i te kaiārahi 2. Ka whakamahia e ngā iahiko ārai-whakarara (i ngā ahunga rerekē) he kaha pana tetahi ki tetahi.
Te rahi o te kaha aukume:
F/l = 2 x 10 -5 Newton
20 ngā pātai ariā me ngā whakautu e pā ana ki te kaha aukume i waenga i ngā waea whakarara e rua:
1. Pātai: He aha te tino take o te kaha aukume i waenganui i ngā waea e rua e kawe ana i te iahiko whakarara?
Whakautu: Ka puta te kaha aukume i waenganui i ngā waea whakarara e rua nā ngā papa aukume i hangaia e ngā iahiko o ia waea e pā ana ki tētahi atu waea.
2. Pātai: He aha te pānga o te ahunga o te iahiko i roto i ngā waea e rua ki te kaha i waenganui i a rāua?
Whakautu: Ki te rere ngā ia i te ahunga kotahi, ka kukume ngā waea tetahi i tetahi. Ki te rere ngā ia i ngā ahunga rerekē, ka panaia ngā waea tetahi i tetahi.
3. Pātai: He aha te whanaungatanga i waenga i te tawhiti i waenga i ngā waea me te kaha aukume?
Whakautu: He rite whakamuri te kaha aukume ki te tawhiti i waenga i ngā waea. I te piki haere o te tawhiti, ka heke te kaha.
4. Pātai: He aha te pānga o te kaha ki te kaha o te iahiko i roto i ngā waea?
Whakautu: He rite tonu te kaha ki te hua o ngā iahiko i roto i ngā waea e rua.
5. Pātai: Ka aha te kaha mēnā kāore he iahiko i tētahi o ngā waea?
Whakautu: Ka kore te kaha nā te mea kāore he aukume e whakaputa i tētahi papa aukume hei pā ki tētahi atu waea.
6. Pātai: He aha te kaha aukume i waenganui i ngā waea whakarara e rua e kiia ana he kaha kore-pā?
Whakautu: Nā te taunekeneke o ō rātou papa aukume te kaha i puta ai, ehara i te pa atu ā-tinana.
7. Pātai: He aha te rerekētanga o te papa aukume e hangaia ana e te waea kotahi i runga i te tawhiti?
Whakautu: Ka heke te kaha o te papa aukume i te tawhiti haere atu i te waea.
8. Pātai: Ka taea te ārai, te ārai rānei i te kaha aukume i waenganui i ngā waea whakarara e rua?
Whakautu: Ahakoa he uaua ki te tiaki katoa i ngā papa aukume, mā te whakamahi i ngā rauemi he nui te uruhanga aukume ka taea te huri me te whakaiti i te pānga o ngā papa ki a rātou anō.
9. Pātai: Mena he poutū te hononga o ngā waea e rua tetahi ki tetahi, me pēhea te hurihanga o te kaha aukume i waenganui i a rāua?
Whakautu: Mena he poutū ngā waea, ā, ka whiti ngā ara o ō rātou ia, e kore rātou e whakaputa i tētahi kaha kukume, kaha ātete rānei tetahi ki tetahi pērā i ngā waea whakarara.
10. Pātai: Me pēhea te whakatau i te ahunga o te kaha aukume i runga i te waea e kawe ana i te iahiko?
Whakautu: Ka taea te whakatau i te ahunga mā te whakamahi i te ture ringa matau: tohua te koromatua ki te ahunga o te ia, ā, mā ngā maihao piko e tohu te ahunga o te papa aukume.
11. Pātai: He kaha pokapū te kaha aukume i waenganui i ngā waea whakarara e rua?
Whakautu: Kāo, ehara i te kaha pokapū nā te mea ko te ahunga me te rahi o te kaha e whakawhirinaki ana ki te takotoranga me te wehenga o ngā waea.
12. Pātai: Ka taea e ngā waea te rongo i te kaha ahakoa ka whakanohoia ki roto i te korehau?
Whakautu: Ae, kāore te kaha aukume i waenganui i ngā waea e whakawhirinaki ana ki tētahi reo; ka taea e ia te noho i roto i te korehau.
13. Pātai: He aha te hononga o te iahiko, te Ampere, ki te kaha i waenganui i ngā waea e rua?
Whakautu: Ko te Ampere te iahiko e tautuhia ana, ina rere i roto i ngā ara iahiko e rua e whakarara ana, he mutunga kore te roa, ā, ka whakanohoia kia kotahi mita te tawhiti i roto i te korehau, ka hua ake he kaha o te 2 x 10^(-7) Newtons mō ia mita o te roa i waenganui i ngā waea.
14. Pātai: Ka pāngia te kaha aukume i waenganui i a rātou e te rauemi o ngā waea?
Whakautu: Kāore te rauemi o ngā waea e pā tika ana ki te kaha. Ka whakawhirinaki te kaha ki te ia me te tawhiti i waenga i ngā waea.
15. Pātai: He aha te tūranga o te uruhanga o te wāhi wātea (μ₀) i roto i te kaha i waenganui i ngā waea whakarara e rua?
Whakautu: Ko te uruhanga o te wāhi kore he pūmau e hono ana i te kaha o te papa aukume ki te ia e puta ai, ā, ka puta i roto i te tātai mō te kaha i waenga i ngā waea e rua e kawe ana i te ia.
16. Pātai: Ka taea e ngā kaha aukume te mahi ki ngā waea?
Whakautu: Ahakoa ka taea e ngā kaha aukume te whakaputa kaha ki runga i tētahi waea e mau ana i te iahiko, kāore e mahi i te mea e mahi poutū ana ki te ahunga nekehanga.
17. Pātai: He aha te pānga o te roa o ngā waea ki te kaha aukume i waenganui i a rātou?
Whakautu: He rite te kaha ki te roa o ngā waea e whakarara ana, e tata ana tetahi ki tetahi.
18. Pātai: He whakamahinga tūturu, he hua rānei o te kaha aukume i waenga i ngā waea whakarara?
Whakautu: Ae, i roto i ngā ara iahiko hiko, inā koa ko ērā he nui ngā iahiko, ka taea e te taunekeneke aukume i waenga i ngā waea te neke, me whai whakaaro ki tēnei i roto i te hoahoa.
19. Pātai: Ki te takaihia tētahi waea ki roto i tētahi koropiko, he aha te pānga ki te kaha aukume?
Whakautu: Ka puta he papa aukume kaha ake i te waea kopikopiko, i te solenoid rānei, i te waea tika, ka whakarerekē i te kaha i waenganui i a ia me tētahi atu waea.
20. Pātai: Ka taea te whakamahi i ngā kaha aukume i waenga i ngā waea whakarara hei ine i te iahiko?
Whakautu: Ae, ka whakamahia e ngā taputapu pēnei i te taurite o te aukume te kaha aukume i waenga i ngā waea hei ine i te aukume mā te whakataurite ki tētahi kaha miihini e mōhiotia ana.
He mea nui te mārama ki te kaha aukume i waenga i ngā waea whakarara i roto i te aukume hiko, ā, he pānga anō hoki ki te hoahoa ara iahiko, ki te hikohiko, me te miihini hiko.
