Fiziki ya Sukulu ya Sekondale

Chilinganizo cha Kukana Magetsi

Mu nkhani yokhudza lamulo la Ohm, njira yofotokozera ubale pakati pa magetsi (V), magetsi (I) ndi kukana kwa magetsi (R) yapezeka . Mwa masamu, imafotokozedwa kudzera mu equation iyi:

Chiyerekezo ichi chikuwonetsa kuti kukana kwamagetsi (R) kumafanana mwachindunji ndi magetsi (V) ndipo kumafanana molakwika ndi magetsi (I). Mphamvu yamagetsi ikakula, kukana kumakulirakulira. Mosiyana ndi zimenezi, mphamvu yamagetsi ikakula, kukana kumakulirakulirakulira. Chiyerekezochi chimafotokoza lamulo la Ohm pokhapokha ngati kukana (R) kuli kokhazikika. Ngati kukana sikukhazikika, chiyerekezochi sichikufotokoza lamulo la Ohm koma chimafotokoza kukana kwa woyendetsa.

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Zitsanzo 5 za Mafunso Okhudza Mphamvu ya Magetsi

1. Dziwani mphamvu yamagetsi pamalo 1 cm kuchokera pa chaji q = 5,0 μC. Coulomb's constant (k) = 9 x 10⁹ Nm²C^-2, 1 μC = 10^-6 C.
Zokambirana
Amadziwika kuti:
Mtunda kuchokera pa cholipiritsa (r) = 1 cm = 1/100 m = 0,01 m = 10^-2 m
Kuchaja (q) = 5,0 μC = 5,0 x 10^-6 Coulomb
Anafunsa kuti: Mphamvu yamagetsi (V)
Yankho:

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Zitsanzo 11 za mavuto a capacitor - ma series otsatizana ndi ofanana

1. Zitatu kapitomu yolumikizidwa motsatizana monga momwe zilili pachithunzi chili pansipa. Ngati C₁ = 2 μF, C₂ = 4 μF, C₃ = 4 μF, ndiye kuti mphamvu yosinthira ndi…
Zokambirana
Amadziwika kuti:
Capacitor C₁ = 2 μF
Capacitor C₂ = 4 μF
Capacitor C₃ = 4 μF
Anafunsa kuti: Kutha kusintha (C)

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Chitsanzo cha Mafunso Okhudza Mphamvu Zamagetsi

1. Electron imathamanga kuchokera ku kupuma kudzera mu kusiyana kwa mphamvu ya ma volts 12. Kodi kusintha kwa mphamvu ya mphamvu ya elekitironi ndi kotani?
Zokambirana
Amadziwika kuti:
Katundu Electron imodzi (e) = -1,60 x 10^-19 Coulomb
Kusiyana kwa mphamvu zamagetsi = magetsi amagetsi (V) = 12 Volts
Anafunsa kuti: Kusintha kwa mphamvu yamagetsi (ΔEP)
Yankho:
ΔEP = q V = (-1,60 x 10^-19 C(12 V) = -19,2 x 10^-19 Joule
Chizindikiro choyipa chimatanthauza mphamvu zamagetsi mphamvu yamagetsi ya elekitironi imachepa. Ikakhala pafupi ndi mbale yomwe ili ndi mphamvu yoipa, mphamvu yamagetsi ya elekitironi imakhala pamlingo wapamwamba kwambiri. Ikafika pafupi ndi mbale yomwe ili ndi mphamvu yoipa, mphamvu yamagetsi ya elekitironi imakhala pamlingo wotsika kwambiri.

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Zitsanzo 4 za Mavuto a Magetsi Othamanga

1. Malo amagetsi ya 8000 N/C yopingasa pa malo ozungulira okhala ndi malo okwana 10 m²Dziwani kutuluka kwa magetsi yomwe imadutsa pamwamba pa sikweya!
Zokambirana
Amadziwika kuti:
Malo amagetsi (E) = 8000 N/C
Malo ozungulira (A) = 10 m²
θ = 0^o (mizere yamagetsi imagwirizana ndi mizere yanthawi zonse)
Anafunsa kuti: Kutuluka kwa magetsi (Φ)
Yankho:

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Zitsanzo 7 za Mavuto a Angular Momentum

Mphamvu Yozungulira

1. Chinthu chili ndi mphindi ya kutopa 2 kg m² ndipo imazungulira pa mzere wokhazikika ndi liwiro la angular 1 rad/s. Ndalama zingati? mphamvu ya angular chinthu chimenecho?
Zokambirana
Amadziwika kuti:
Nthawi ya kulephera (I) = 2 kg m²
Liwiro la angular (ω) = 1 rad/s
Anafunsa kuti: Mphamvu ya angular (L)
Yankho:
Fomula ya angular momentum:

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Zitsanzo 5 za mafunso okhudza mphamvu ya kinetic yozungulira

1. Chinthu chili ndi nthawi ya inertia ya 1 kg m2 ^yozungulira pa mzere wokhazikika ndi liwiro la angular la 2 rad/s. Kodi mphamvu ya kinetic ya chinthucho ndi yotani?

Zokambirana
Amadziwika kuti:
Nthawi ya kutopa (I) = 1 kg m²
Liwiro la angular (ω) = 2 rad/s
Anafunsa kuti: Mphamvu ya kinetic yozungulira (EK)
Yankho:
Fomula ya mphamvu ya kinetic yozungulira:

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Zitsanzo 5 za lamulo lachiwiri la Newton la kayendedwe ka kuzungulira

1. Chingwecho chimazunguliridwa m'mphepete mwa silinda yopanda kanthu kenako kumapeto kwa chingwecho kumakokedwa ndi mphamvu F kuti silindayo izizungulira pa mzere wake. mphindi ya kalembedwe ndi 2 Nm ndi mphindi ya kutopa Silinda ndi 1 kg m², dziwani kuthamanga kwa silinda!
Zokambirana
Amadziwika kuti:
Mphamvu ya mphindi (τ) = 2 Nm
Nthawi ya kulephera (I) = 1 kg m²
Anafunsa kuti: Kuthamanga kwa silinda kozungulira!
Yankho:
Fomula yachiwiri ya lamulo la Newton yoyendetsera kayendedwe ka kuzungulira:

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Zitsanzo 25 za Mafunso Okhudza Kusakhazikika kwa Maganizo

Nthawi ya Kusakhazikika kwa Tinthu

1. Mpira wolemera magalamu 100 umalumikizidwa ndi chingwe chautali wa masentimita 30 monga momwe chithunzichi chikusonyezera. Nthawi ya kutopa mpira wozungulira axis AB ndi...
Zokambirana
Amadziwika kuti:
Mzere wozungulira ndi AB
Kulemera kwa mpira (m) = magalamu 100 = 100/1000 = 0,1 kilogalamu
Mtunda wa mpira kuchokera ku mzere wozungulira (r) = 30 cm = 0,3 mamita
Anafunsa kuti: Nthawi ya inertia ya mpira (I)

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Zitsanzo 10 za Mafunso Okhudza Mphamvu

1. Kutalika kwa ndodo AB ndi mamita awiri ndipo kukula kwa mphamvu F ndi 10 Newtons. Dziwani mphindi ya kalembedwe kulowera ku mfundo A ndi komwe ndodo AB imazungulira!
Zokambirana
Mzere wozungulira uli pamalo A.

Amadziwika kuti:
Mphamvu (F) = 10 Newtons
Mtunda AB (r)_AB) = mamita 2
Mphamvu F imapanga ngodya ya 90^o motsutsana ndi ndodo AB.
Dzanja lamphamvu (l) = r_AB tchimo 90^o = (mamita awiri)(1) = mamita awiri
Anafunsa kuti: Mphamvu yozungulira mfundo A ndi komwe ndodo AB imazungulira

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