Te whakamāramatanga o te mana hiko
Ko te mana i akohia i roto i te mahi me te Pūngao ka whakatauhia hei mahi i mahia i roto i tētahi wā motuhake. Ko te mahi he tukanga o te huringa pūngao, nō reira ka taea te mārama ko te mana he huringa o te pūngao e puta ana i roto i tētahi wā motuhake.
Ko te mana hiko he panonitanga o te pūngao hiko i roto i tētahi wā kua whakaritea. I roto i tētahi arotake o te pūmanawa hiko, e whakamāramahia ana ko ngā panonitanga o te pūngao pūmanawa hiko ka puta ina haere tētahi utu hiko mā roto i tētahi rerekētanga pūmanawa hiko.
Whārite o te mana hiko
I roto i te pāngarau, he rite te huringa o te pūngao pūmanawa hiko (ΔEP) ki te utu (Q) me te ngaohiko hiko (V), e whakaatuhia ana e te whārite ΔEP = Q V.
Ko te mana he panonitanga o te pūngao pūmanawa hiko i roto i tētahi wā, e whakaatuhia ana i roto i te pāngarau mā te whārite 1:
Ko te utu hiko e rere ana i roto i tētahi wā kua whakaritea he iahiko hiko, e whakaaturia ana i roto i te pāngarau mā te whārite I = Q/t. Ka taea te whakarerekē i te whārite 1 ki te whārite 2:
I runga i ēnei whārite e rua, ka taea te whakatau ko ngā panonitanga o te pūngao hiko i roto i tētahi wā motuhake ka puta ina haere te iahiko hiko mā roto i tētahi rerekētanga pūmanawa hiko. He rite te mana hiko ki te kaha o te iahiko hiko me te pūmanawa hiko, nō reira, ki te piki ake te iahiko hiko me te pūmanawa hiko, ka piki ake anō hoki te mana hiko.
Mena ka rere te iahiko hiko mā roto i tētahi ātete he ātete hiko pumau tōna, ka taea te tatau i te mana hiko mā te whakamahi i te whārite 3, te whārite 4 rānei.
Te waeine hiko
I runga i te whārite 1, ko te wae Pūngao o te Pūnaha Ao ko Joule, ā, ko te wae wā o te Pūnaha Ao ko he hēkona, nō reira ko te wae mana hiko ko Joule/hēkona, he whakarāpopototanga ko J/s. Ka kiia hoki ko Joule/hēkona ko Watt. 1 Watt = 1 Joule/hēkona.
I runga i te whārite 2, ko te ine o te pūmanawa hiko ko Volt, ā, ko te ine o te iahiko hiko ko Ampere, nō reira ko te ine o te mana hiko ko Volt Ampere, arā, ko VA te whakarapopototanga.
