Chitsanzo cha mphamvu yamagetsi

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:

Fomula yamagetsi:

Φ = EA cos θ
Kufotokozera: Φ = electric flux (Nm)²/C), E = malo amagetsi (N/C), A = malo a pamwamba (m²), θ = ngodya pakati pa mzere wamagetsi ndi mzere wamba (mzere wolunjika pamwamba).

Kukula kwa mphamvu yamagetsi:

Φ = EA cos θ = (8000)(10)(cos 0) = (8000)(10)(1) = 80.000 = 8 x 10 ⁴ Nm ² /C

2. Mphamvu yamagetsi ya 5000 N/C imadutsa pamwamba pa sikweya ndikupanga ngodya ya 60^o ku mzere wabwinobwino. Malo okwana sikweya ndi 2 m²Dziwani kuchuluka kwa magetsi kudzera pamwamba pa sikweya!
Zokambirana
Amadziwika kuti:
Malo amagetsi (E) = 5000 N/C
Malo ozungulira (A) = 2 m²
θ = 60^o
Anafunsa kuti: Kutuluka kwa magetsi (Φ)
Yankho:
Kutuluka kwa magetsi:
Φ = EA cos θ = (5000) (2) (cos 60) = (5000) (2) (0,5) = 5000 = 5 x 10³ Nm²/C

3. Mphamvu yamagetsi ya 4000 N/C imadutsa pamwamba pa chipika monga momwe chithunzi chili pansipa. Chipikacho ndi cha mamita awiri m'litali, mita imodzi m'lifupi, ndi mita imodzi kutalika. Dziwani mphamvu yamagetsi yomwe imadutsa mu chipikacho!
Zokambirana
Amadziwika kuti:
Malo amagetsi (E) = 5000 N/C
Malo ozungulira (A) = 2 m²
Anafunsa kuti: Kutuluka kwa magetsi (Φ)
Yankho:

Kutuluka kwa magetsi kudzera mu chipikacho

Kutengera ndi chithunzichi, mizere yamagetsi yokhala ndi utoto wofiira imakhala yolunjika pamwamba pa chipikacho kotero kuti imagwirizana ndi mzere wamba (kupanga ngodya ya 0 ^o ), pomwe mizere ina yamagetsi imakhala yofanana ndi pamwamba kotero kuti imakhala yolunjika ku mzere wamba (kupanga ngodya ya 90 ^o ).

Mizere yofiira yamagetsi imalowa mu chipikacho koma imapita kunja kuchokera pamenepo. Mizere yamagetsi ikalowa mu chipikacho, zimakhala ngati pali mphamvu yoipa mkati mwa chipikacho, kotero mphamvu yoipa yamagetsi imakhala yoipa. Mosiyana ndi zimenezi, pamene mizere yamagetsi imapita kunja kuchokera mu chipikacho, zimakhala ngati pali mphamvu yoipa mkati mwa chipikacho, kotero mphamvu yoipa yamagetsi imakhala yoipa. Mizere yamagetsi yomwe imalowa mu chipikacho ndi yofanana ndi mizere yamagetsi yomwe imachoka mu chipikacho, kotero mphamvu yoipa yamagetsi yomwe imachokera pamenepo ndi zero.

4. Mpira uli ndi utali wa mamita 0,5 ndipo pakati pa mpira pali mphamvu yamagetsi ya 10 μC. Dziwani momwe magetsi akuyendera kudzera mu mpirawo!
Zokambirana
Amadziwika kuti:
Utali wa mpira (r) = mamita 0,5
Mphamvu yamagetsi (Q) = 10 μC = 10 x 10^-6 C
Anafunsa kuti: Kutuluka kwa magetsi (Φ)
Yankho:

Malo amagetsi:

E = kq/r²
E = (9 x 10⁹ Nm²/C²)(10 x 10^-6 C) / 0,5²
E = (90 x 10³/ 0,25
E = 360 x 10³
E = 3,60 x 10⁵ N / C

Malo ozungulira:

A = 4 π r ² = 4 (3,14) (0,5) ² = (12,56) (0,25) = 3,14 m ²

Kutuluka kwa magetsi:

Mizere yamagetsi imakhala yolunjika pamwamba ndipo imagwirizana ndi mzere wamba kotero kuti ngodya yopangidwa ndi 0^o.
Φ = EA cos θ
Φ = (3,60 x 10⁵)(3,14)(cos 0)
Φ = (11,304 x 10⁵) (1)
Φ = 11,304 x 10⁵
Φ = 1,13 x 10⁶ Nm²/C