6 mau laʻana o nā nīnau e pili ana i ke kānāwai o Ohm
E aʻo pū i nā laʻana o ke kānāwai o Ohm a me nā mea e pili ana i ke kānāwai o Ohm .
1. Papa o nā ana o ka ʻokoʻa hiki a me ka ikaika o ke au uila
Ma muli o ka papa ʻaina, ʻo ka pilina ma waena o V, I, a me R he…
A. ʻO ka nui o V, ʻo ka nui o I a me R e mau ana ka like.
B. Ua kūlike ka waiwai o R me I a me V
C. ʻO ka waiwai o R ka huahana o V a me I.
D. Ua like ka waiwai o I me R a ua like hoʻi me V.
Pahana
ʻO ke ʻano hana o ke kānāwai o Ohm:
V = IR a i ʻole R = V / I
ʻO ka waiwai kū'ē uila e pili ana i ka ʻikepili ma ka papa:
R 1 = V / I = 1,50 / 0,08 = 18,75 Ohms
R 2 = V / I = 2,80 / 1,50 = 2,87 Ohms
R 3 = V / I = 3,99 / 2,10 = 1,9 Ohms
Ma muli o ka papa ʻaina, ʻo ka pilina ma waena o V, I a me R, ʻo ia ka waiwai o R he kūlike ʻole ia me V a me I. ʻO ke ʻano kēia, ʻo ka nui o V a me I, ʻo ka liʻiliʻi o R.
ʻAʻole paʻa ʻo R, no laila ʻaʻole wehewehe ka ʻikepili ma ka papa ma luna i ke kānāwai o Ohm akā ʻo ke kū'ē uila. Pili wale ke kānāwai o Ohm ke paʻa ʻo R.
ʻAʻohe pane pololei.
2. ʻO ka hoʻohana ʻana i kahi uea alakaʻi i lōʻihi loa i loko o kahi kaapuni e hōʻemi i ke au uila. Hoʻokumu ʻia kēia e...
A. lilo ke kū'ē i mea liʻiliʻi
B. lilo nā pilikia i mea nui aʻe
C. lilo ka uila i ʻoi aku ka nui
D. lilo ka uila i mea liʻiliʻi
Pahana
ʻO ka pane pololei ʻo B.
3. ʻO wai ka pakuhi e hōʻike ana i ka pilina ma waena o ka ʻokoʻa hiki a me ke au uila?
Pahana
Ua hōʻike ʻia ka pilina ma waena o ka ʻokoʻa hiki a me ke au uila e ka pakuhi ma ka pane A.
4. E nānā i ka papa ma lalo o nā hopena hoʻokolohua. Ma muli o ka ʻikepili ma luna, hiki ke hoʻoholo ʻia ʻo ka ikaika o kēia manawa...
Ua like ʻo A. me ke anakahi uila
B. kūlike i ke anakahi uila
C. like me ke anakahi uila
ʻAʻole i hoʻopilikia ʻia e ka uila D.
Pahana
Ma muli o ka ʻikepili ma ka papa, ʻo ke kiʻekiʻe o ka voltage, ʻo ka nui o ke au. No laila, hiki ke hoʻoholo ʻia ua kūlike pololei ke au me ka voltage.
ʻO ka pane pololei ʻo B.
5. He 150 Ohm ke kū'ē o kahi mea hana a he 2A ke au uila e hele ana ma o ia mea, no laila ʻo ka ʻokoʻa hiki ke hana ʻia...
A. 3,0 Volt
B. 7,5 Volt
C. 75 Volt
D. 300 Volt
Pahana
Ua ʻike ʻia:
Ke kū'ē (R) = 150 Ohm
Au uila (I) = 2 Amperes
Nīnau: ʻOkoʻa hiki ke hana a i ʻole ka uila uila (V)
Pane:
ʻO ke ʻano hana e hōʻike ana i ka pilina ma waena o ke ana uila, ke au uila a me ke kū'ē uila:
V = IR
ʻIkepili:
V = uila uila, I = au uila, R = kū'ē uila
ʻOkoʻa hiki a i ʻole ka uila uila:
V = IR = (2 Ampere)(150 Ohm) = 300 Volts
ʻO D ka pane pololei.
6. ʻO ke au i loko o kahi ʻāpana uea kū'ē he 4 A. Inā hāʻawi ʻia nā wēlau ʻelua i kahi hiki o 12 Volts. Ehia mau mea keakea?
A. 2 ohms
B. 3 ohms
C. 4 ohm
D. 5 ohms
Pahana
Ua ʻike ʻia:
Au uila (I) = 4 Amperes
Ka uila uila (V) = 12 Volts
Nīnau: Ke kū'ē uila (R)
Pane:
ʻO ke ʻano hana e hōʻike ana i ka pilina ma waena o ke ana uila, ke au uila a me ke kū'ē uila:
V = IR
Ke kū'ē uila:
R = V / I = 12 Volts / 4 Amps = 3 Ohms
ʻO ka pane pololei ʻo B.
Puna nīnau:
Nā Nīnau Hoʻokolohua ʻEpekema Lahui no ke Kula Kiʻekiʻe Haʻahaʻa/Kula Kiʻekiʻe ʻIslama
