Ngā Whatunga Gurumuda
Te pūmanawa hiko i te kaiārahi o te pōro – ngā raruraru me ngā otinga
1. Ko te radius o tētahi ara iahiko pōro tuwhera 4-μC he 8-cm. Tātaihia te pūmanawa hiko i te mata o te pōro. (k = 9.10 9 Nm 2 .C -2 )
Mōhiotia:
te utu hiko (Q) = 4 μC = 4 x 10-6 C 
Ko te radius o te pōro (r) = 8 cm = 8 x 10 -2 m
Te pūmau o Coulomb (k) = 9.10 9 Nm 2 .C -2
E hiahiatia ana: Te pūmanawa hiko i te mata o te pōro (V)
Ngā ara iahiko pūnga raupapa me ngā ara iahiko whakarara – ngā raruraru me ngā otinga
1. He aha te tapeke o ngā utu i roto i ngā ara iahiko pūnga i raro nei (1 μF = 10 -6 F)
Mōhiotia:
Pūnga 1 (C1) = 3 µF
Pūnga 2 (C 2 ) = 3 μF
Pūnga 3 (C 3 ) = 3 μF
Pūnga 4 (C 4 ) = 2 μF
Pūnga 5 (C 5 ) = 3 μF
Ngaohiko (V) = 3 Ngaohiko
Te ariā motuhake o te whanaungatanga – ngā raruraru me ngā otinga
1. E neke ana tētahi mea, ko tōna roa he 60 m, i te tere o te 0.6 c (c = te tere o te mārama). E ai ki tētahi kaimātakitaki tūmau, he aha te roa o te mea?
Mōhiotia:
Ko te roa tika (L o ) = 60 mita
Te tere o te mea (v) = 0.6 c
E hiahiatia ana: Te roa o te whakawhāititanga (L)
Ngā ngaru tū – ngā raruraru me ngā otinga
1. Kei te herea te aho 3-m te roa ki tētahi pito, ā, kei te honoa tētahi atu pito ki te wiri. Ina wiria te wiri, ka hangaia he ngaru tūmau e te aho , e whakaaturia ana i te ahua i raro nei.
Whakatauhia te tūranga o te antinode tuarima mai i te pito pumau.
Rongoā:
Te tawhiti i waenganui i ngā pūnga e rua = 3 mita / 5 = 3/5 mita.
Ko te tawhiti i waenganui i te pūnga tuatahi me te pito pumau = 3/5 mita
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
Ngā ture a Kirchhoff – ngā raruraru me ngā otinga
1. He aha te ngaohiko pito o te pākahiko i te ara iahiko i raro nei?
otinga
emf = te kaha hikohiko = te rerekētanga pūmanawa i waenga i ngā pito ina kore o nāianei te rere ki tētahi ara iahiko o waho.
Ko te ngaohiko o te pito (V) = te rerekētanga pūmanawa i waenga i ngā pito ina rere te iahiko mai i te pākahiko.
Ki te kore he iahiko e tangohia mai i te pākahiko, ka rite te ngaohiko o te pito ki te emf.
Mōhiotia:
Te nekehanga poutū – ngā raruraru me ngā otinga
1. Ka whiua poutū ake a Pōro A me te tere o te 10 m/s. I muri i te 1 hēkona, mai i taua tūranga anō, ka whiua poutū ake a Pōro B i te ara kotahi, me te tere o te 25 m/s. He aha te teitei o te pōro B ina tūtaki ki a Pōro A?
Rongoā:
I te whakaoti rapanga o te nekehanga poutū , ka hoatu he tohu pai ki te rahinga whārite e anga whakarunga ana, ka hoatu he tohu kino ki te rahinga whārite e anga whakararo ana.
Te kaha hikohiko – ngā raruraru me ngā otinga
1. Mena ko te kaha hiko pūmau he 144 N, he aha te tawhiti i waenga i ngā utu e rua … (1 μC = 10 -6 C me k = 9.10 9 Nm 2 .C -2 )
Mōhiotia:
Te kaha hiko (F 12 ) = 144 N
Utu 1 (q 1 ) = 10 μC = 10 x 10 -6 C
Utu 2 (q 2 ) = 4 μC = 4 x 10 -6 C
Pūmau (k) = 9 x 10 9 Nm 2 .C -2
C = Coulomb, N = Newton, m = mita
Te pokanoa takirua – ngā raruraru me ngā otinga
1. Ka haere te mārama kōwhai mā roto i ngā kōhao e rua, ā, ka kitea he tauira pokanoa i runga i te mata.
(1) Ka whānui ake ngā tapa kanapa mēnā ka whakakapia te mārama kōwhai ki te kikorangi
(2) Ka nui ake te whānui o ngā tapa kanapa mēnā ka whakaitihia te tawhiti i waenga i ngā kōhao
(3) Ka heke te kaha o te mārama mena kei tawhiti atu i te taha o waenganui
(4) He pumau te kaha o te mārama mena kei tawhiti atu i te taha o waenganui