Lamulo la Ohm - mavuto ndi mayankho

Lamulo la Ohm - mavuto ndi mayankho

1.

Kutengera ndi tebulo ili m'munsimu, ubale pakati pa voltage (V), magetsi (I) ndi kukana (R) ndi…..

Yankho:

Lamulo la Ohm:

V = IR kapena R = V / I

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

Kutengera ndi tebulo, ubale pakati pa V, I ndi R ndi mtengo wa R wofanana ndi V ndi I. Izi zikutanthauza kuti V ndi I akakula, R amakhala wocheperako.

Mtengo wa V/I si wofanana kotero susonyeza lamulo la Ohm . Malinga ndi lamulo la Ohm, mtengo wa V/I uyenera kukhala wofanana.

2. Ndi graph iti yomwe imasonyeza ubale pakati pa kusiyana komwe kungachitike ndi mphamvu yamagetsi?

Yankho:

A

3. Kutengera ndi deta yomwe ili mu tebulo lotsatira la zotsatira za kuyesera, zitha kutsimikizika kuti mphamvu yamagetsi ...

Yankho:

Kutengera ndi deta yomwe ili patebulo, magetsi amagetsi akachuluka, magetsi amagetsi amakulanso. Chifukwa chake, zatsimikiziridwa kuti magetsi amagetsi ndi ofanana ndi magetsi.

4. Chipangizo chili ndi kukana kwa 150 Ohm ndipo mphamvu yamagetsi ya 2A imadutsa. Kusiyana komwe kulipo ndi…

Zodziwika:

Kukana (R) = 150 Ohm

Mphamvu yamagetsi (I) = 2 Ampere

Kufunidwa: Voltage (V)

Yankho:

V = IR

V = magetsi amagetsi, I = magetsi amagetsi, R = kukana magetsi

Voteji :

V = IR = (2 Ampere)(150 Ohm) = 300 Volts

5. Mphamvu yamagetsi mu waya wotsutsa ndi 4 A. Pamene malekezero onse awiri apatsidwa mphamvu ya 12 Volts. Kodi kukana kwamagetsi ndi kotani?

Zodziwika:

Mphamvu yamagetsi (I) = 4 Ampere

Volti (V) = 12 Volti

Kufunidwa: Kukana kwamagetsi (R)

Yankho:

Kukaniza :

R = V / I = 12 Volts / 4 Amps = 3 Ohms

1. Lamulo la Ohm ndi liti?
   • yankhoLamulo la Ohm limati mphamvu yamagetsi ($I$) kuyenda kudzera mu kondakitala pakati pa mfundo ziwiri kumagwirizana mwachindunji ndi magetsi ($V$) kudutsa mfundo ziwiri, ndipo motsatizana ndi kukana ($R$) ya woyendetsa. Mwa masamu, imaimiridwa ngati $V=IR$.
2. Ngati chotsutsa chikutsatira lamulo la Ohm, kodi tiyenera kuwona ubale wotani pakati pa magetsi ndi magetsi?
   • yankho: Tiyenera kuona ubale wolunjika. Ngati mujambula voteji motsutsana ndi mphamvu yamagetsi, kutsetsereka kwa mzerewu kuyimira kukana, ndipo mzerewo udzadutsa poyambira.
3. Kodi kuonjezera kukana mu dera kumakhudza bwanji mphamvu yamagetsi, poganiza kuti mphamvu yamagetsi imakhalabe yokhazikika?
   • yankhoNgati kukana kukuwonjezeka pamene magetsi akupitirirabe, mphamvu yamagetsi mu dera idzachepa, malinga ndi lamulo la Ohm.
4. Nchifukwa chiyani lamulo la Ohm silingagwire ntchito pazifukwa zina kapena pazinthu zina?
   • yankho: Lamulo la Ohm limagwira ntchito pa zipangizo za "ohmic" pomwe kukana kumakhalabe kosalekeza ndi kusintha kwa magetsi. Komabe, pa zipangizo zina ndi zipangizo (monga ma diode, kapena pamafupipafupi kapena kutentha kwambiri), kukana kumatha kusintha ndi magetsi kapena mphamvu, zomwe zimapangitsa kuti ubalewo usakhale wolunjika.
5. Kodi gawo la kukana ndi chiyani, ndipo limatanthauzidwa bwanji malinga ndi lamulo la Ohm?
   • yankho: Chigawo cha kukana ndi ohm (Ω). Ohm imodzi imatanthauzidwa ngati kukana komwe kumalola ampere imodzi yamagetsi kuyenda pamene volt imodzi ikugwiritsidwa ntchito.
6. Ngati ma resistors awiri otsatizana onse atsatira lamulo la Ohm, kodi kuphatikizaku kudzatsatiranso lamulo la Ohm?
   • yankhoInde, kuphatikiza kudzatsatiranso Lamulo la Ohm. Kukana konse mu mndandanda ndi kuchuluka kwa kukana kulikonse, ndipo mphamvu yamagetsi kudzera mu zonse ziwiri idzakhala yofanana. Voltage kudutsa kuphatikiza idzakhala kuchuluka kwa ma voltage kudutsa resistor iliyonse.
7. Kodi kukana kwa waya kumadalira bwanji kutalika kwake ndi malo ake olumikizirana?
   • yankho: Kukana kwa waya kumafanana mwachindunji ndi kutalika kwake komanso motsutsana ndi malo ake opingasa. Motero, waya wautali udzakhala ndi kukana kwakukulu, ndipo waya wokhuthala udzakhala ndi kukana kochepa.
8. Ngati magetsi odutsa pa resistor awirikiza kawiri, kodi mphamvu yamagetsi imasintha bwanji, poganiza kuti resistor imakhalabe ohmic?
   • yankhoNgati chotsutsa chikadali ohmic (ndipo motero chikutsatira Lamulo la Ohm), kuwirikiza kawiri voteji kudzawirikizanso kawiri mphamvu yamagetsi.
9. Kodi chinthu chomwe chilibe kukana chingathe kuchitika m'machitidwe?
   • yankho: Mu zochitika za tsiku ndi tsiku, gawo lopanda kukana konse, kapena "superconductor", silingathe kupangidwa mosavuta. Komabe, zipangizo zina pa kutentha kochepa kwambiri zimatha kukhala superconductors ndipo sizingathe kukana konse kuyenda kwa magetsi.
10. Kodi kutayika kwa mphamvu kwa resistor malinga ndi lamulo la Ohm ndi chiyani?

• yankhoMphamvu ($P$) yosungunuka ndi chotsutsa imaperekedwa ndi P=I²R or P=V²/R, yochokera ku kuphatikiza kwa Ohm's Law ndi njira yamphamvu $P=IV$.