Amasekethe kagesi - izinkinga nezixazululo

Amasekethe kagesi - izinkinga nezixazululo

1. R ₁ , = 6 Ω, R ₂ = R _{3 = 2 Ω, kanye} ne -voltage = 14 volts, nquma ugesi osesekethe njengoba kuboniswe esithombeni esingezansi.

Kwaziwa:

Isithambisi 1 (R1 ₎ = 6 Ω

Isithambisi 2 (R2 ₎ = 2 Ω

Isithambisi 3 (R3 ₎ = 2 Ω

I-Voltage (V) = 14 Volt

Okufunwayo: Ugesi wamandla (I)

Isixazululo:

Isivikelo esilinganayo (R):

I-R2 _ne -R3 _zixhunywe ngokulingana. I-resistor efanayo:

1/R ₂₃ = 1/R ₂ + 1/R ₃ = 1/2 + 1/2 = 2/2

R ₂₃ = 2/2 = 1 Ω

I-R1 _kanye ne- _R23 zixhunywe ngochungechunge. I-resistor efanayo:

R = R1 ₊ R23 ₌ 6 Ω + 1 Ω

R = 7Ω

Ugesi wamanje (I):

I = V / R = 14 / 7 = 2 Ampere

2. Yisiphi isifunda sikagesi njengoba kuboniswe ngezansi esinogesi omkhulu.

Isixazululo:

Ukumelana kwe-resistor kungu-R kanti i-voltage kagesi ingu-V.

Impendulo A.

I-R1 _, i-R2 _kanye ne- _R3 zixhunywe ngochungechunge. I-resistor efanayo:

R _A = R ₁ + R ₂ + R ₃ = R + R + R = 3R

Ugesi wamanje (I):

Impendulo B.

I-R1 _, i-R2 _kanye ne-R3 _zixhunywe ngokulingana. I-resistor efanayo:

1/R = 1/R ₁ + 1/R ₂ + 1/R ₃ = 1/R + 1/R + 1/R = 3/R

R _B = R/3

Ugesi wamanje (I):

Impendulo C.

I-R2 _ne -R3 _zixhunywe ngokulingana. I-resistor efanayo:

1/R ₂₃ = 1/R ₂ + 1/R ₃ = 1/R + 1/R = 2/R

R ₂₃ = R/2

I-R1 _kanye ne- _R23 zixhunywe ngochungechunge. I-resistor efanayo:

R _C = R1 ₊ R23 ₌ R + R/2 = 2R/2 + R/2 = 3R/2

Ugesi wamanje (I):

Impendulo D.

I-R1 _kanye ne-R2 _zixhunywe ngokulingana. I-resistor efanayo:

1/R ₁₂ = 1/R ₁ + 1/R ₂ = 1/R + 1/R = 2/R

R ₁₂ = R/2

I-R ₁₂ kanye ne-R ₃ zixhunywe ngochungechunge. I-resistor efanayo:

R _D = R ₁₂ + R ₃ = R/2 + R = R/2 + 2R/2 = 3R/2

Ugesi wamanje (I):

3. R _{​​​​1} = 4 ohms, R ₂ = 6 ohms, R ₃ = 2 ohms, kanye no-V = 24 volts. Uyini ugesi osesekethe njengoba kuboniswe esithombeni esingezansi.

Kwaziwa:

Isivikelo 1 (R1 ₎ = 4 Ohm

Isivikelo 2 (R2 ₎ = 6 Ohm

Isivikelo 3 (R3 ₎ = 2 Ohm

I-Voltage (V) = 24 Volt

Okufunwayo: Ugesi osebenza kusekethe

Isixazululo:

I-R1 _, i-R2 _kanye ne- _R3 zixhunywe ngochungechunge. I-resistor efanayo:

R = R1 ₊ R2 ₊ R3 ₌ 4 + 6 + 2

R = 12 Ohm

Amandla kagesi:

I = V / R = 24 / 12 = 2 Ampere

4. Yisiphi isifunda sikagesi njengoba kuboniswe ngezansi esinogesi omkhulu.

Isixazululo

Ugesi osebenza ku-circuit A.

I-resistor efanayo:

R ₁ = 3 Ω, R ₂ = 4 Ω, R ₃ = 4 Ω, V = 12 Volts

I-R2 _ne -R3 _zixhunywe ngokulingana. I-resistor efanayo:

1/R ₂₃ = 1/R ₂ + 1/R ₃ = 1/4 + 1/4 = 2/4 = 1/2

R ₂₃ = 2/1 = 2 Ω

I-R1 _kanye ne- _R23 zixhunywe ngochungechunge. I-resistor efanayo:

R = R ₁ + R ₂₃ = 3 Ω + 2 Ω = 5 Ω

Ugesi wamanje (I):

I = V / R = 12 / 5 = 2.4 Ampere

Ugesi osebenza ku-circuit B.

I-resistor efanayo:

R ₁ = 8 Ω, R ₂ = 2 Ω, R ₃ = 2 Ω, V = 36 Volts

I-R1 _, i-R2 _kanye ne- _R3 zixhunywe ngochungechunge. I-resistor efanayo:

R = R1 ₊ R2 ₊ R3 ₌ 8 + 2 + 2 = 12 Ω

Ugesi wamanje (I):

I = V / R = 36 / 12 = 3 Ampere

Ugesi osebenza ku-circuit C.

I-resistor efanayo:

R ₁ = 4 Ω, R ₂ = 4 Ω, R ₃ = 6 Ω, V = 12 Volts

I-R2 _ne -R3 _zixhunywe ngokulingana. I-resistor efanayo:

1/R ₂₃ = 1/R ₂ + 1/R ₃ = 1/4 + 1/4 + 1/6 = 3/12 + 3/12 + 2/12 = 8/12

R ₂₃ = 12/8 = 1.5 Ω

Ugesi wamanje (I):

I = V / R = 12 / 1.5 = 8 Ampere

Ugesi osebenza ku-circuit D.

I-resistor efanayo:

R ₁ = 3 Ω, R ₂ = 3 Ω, R ₃ = 3 Ω, R ₄ = 3 Ω, R ₅ = 6 Ω, V = 24 Volts

I-R2 _, i-R3 _kanye ne-R4 _zixhunywe ngokulingana. I-resistor efanayo:

1/R ₂₃₄ = 1/R ₂ + 1/R ₃ + 1/R ₄ = 1/3 + 1/3 + 1/3 = 3/3

R ₂₃₄ = 3/3 = 1 Ω

I-R1 _, i- _R234 kanye ne- _R5 zixhunywe ochungechungeni. I-resistor efanayo:

R = R1 ₊ R234 ₊ R5 ₌ 3 + 1 + 6 = 9 Ω

Ugesi wamanje (I):

I = V / R = 24 / 9 = 2.6 Ampere

5. Ngokusho kwesithombe njengoba kuboniswe ngezansi, thola:

A. Ukumelana okuphelele

B. Amandla kagesi asebenza kusekethe

C. Okwamanje I ₁

D. Okwamanje I ₂

Kwaziwa:

Isithambisi 1 (R1 ₎ = 4 Ω

Isithambisi 2 (R2 ₎ = 4 Ω

Isithambisi 3 (R3 ₎ = 2 Ω

Isithambisi 4 (R4 ₎ = 3 Ω

I-voltage kagesi (V) = 12 Volts

Isixazululo:

A. Ukumelana okuphelele (R)

I-Resistor R2 _kanye ne-resistor R3 _zixhunywe ngochungechunge. I-resistor efanayo:

R ₂₃ = R ₂ + R ₃ = 4 Ω + 2 Ω = 6 Ω

I-Resistor R ₂₃ kanye ne-resistor R ₄ zixhunywe ngokulingana. I-resistor efanayo:

1/R ₂₃₄ = 1/R ₂₃ + 1/R ₄ = 1/6 + 1/3 = 1/6 + 2/6 = 3/6

R ₂₃₄ = 6/3 = 2 Ω

I-Resistor R ₁ kanye ne-resistor R ₂₃₄ zixhunywe ngochungechunge. I-resistor efanayo:

R = R ₁ + R ₂₃₄ = 4 Ω + 2 Ω = 6 Ω

Ukumelana okuphelele kungama-6 Ohms.

B. Ugesi osebenza kusekethe (I)

V = IR

V = i-voltage kagesi, I = ugesi wamanje, R = ukumelana kagesi

Amandla kagesi:

I = V / R = 12 Volts / 6 Ohms = 2 Amps

C. Amandla kagesi I ₁

Ugesi wamanje ku-resistor R ₁ = ugesi wamanje ku-circuit = 2 Amperes.

D. Okwamanje I ₂

Umphikisi R₂₃ kanye ne-resistor R₄ zixhunywe ngokulingana. I-resistor efanayo R₂₃₄ = 2 Ohms.

Amandla kagesi ku-resistor R ₂₃₄ = amandla kagesi ku-resistor R ₁ = 2 Ampere.

I-voltage ku-resistor R ₂₃₄ yile:

V = IR ₂₃₄ = (2 A)(2 Ohm) = 4 Volts

I-voltage ku-resistor R ₂₃₄ = i-voltage ku-resistor R ₄ = i-voltage ku-resistor R ₂₃ = 4 Volts.

_{I-resistor R 23} efanayo ingu-6 Ohm.

Ugesi kagesi ku-resistor R ₂₃ uwukuthi:

I = V / R = 4 Volts / 6 Ohms = 2/3 Ampere

Amandla kagesi ku-resistor R ₂₃ = Amandla kagesi ku-resistor R ₂ = amandla kagesi ku-resistor R ₃ = 2/3 Ampere.

6. R ₁ = R ₂ = 10 Ω kanye no-R ₃ = R ₄ = 8 Ω. Uyini ugesi osesekethe njengoba kuboniswe esithombeni esingezansi?

Kwaziwa:

Isithambisi R ₁ = Isithambisi R ₂ = 10 Ω

Isithambisi R ₃ = Isithambisi R ₄ = 8 Ω

I-voltage kagesi (V) = 12 Volts

Okufunwayo: ugesi wamandla (I)

Isixazululo:

I -resistor efanayo

I-Resistor R3 _kanye ne-resistor R4 _zixhunywe ngokulingana, i-resistor efanayo:

1/R ₃₄ = 1/R ₃ + 1/R ₄ = 1/8 + 1/8 = 2/8

R ₃₄ = 8/2 = 4 Ω

Ama-Resistors R1 _, R2 _kanye no- _R34 axhunyiwe ngochungechunge, i-resistor efanayo:

R = R ₁ + R ₂ + R ₃₄ = 10 Ω + 10 Ω + 4 Ω = 24 Ω

Amandla kagesi:

I = V / R = 12 Volts / 24 Ohms = 0,5 Volts/Ohms = 0.5 Amps

7. Uma ukumelana kwangaphakathi kwebhethri kunganakwa, uyini ugesi osesekethe oboniswe esithombeni esingezansi.

Kwaziwa:

Isithambisi R ₁ = 3 Ohm

Umphikisi R ₂ = 3 Ohm

Isithambisi R ₃ = 6 Ohm

I-voltage kagesi (V) = 6 Volts

Okufunwayo: Ugesi wamandla (I)

Isixazululo:

Isivikelo esilinganayo

Ama-Resistors R ₁ kanye no-R ₂ axhunywe ngochungechunge. I-resistor efanayo:

R ₁₂ = R ₁ + R ₂ = 3 Ohms + 3 Ohms = 6 Ohms

I-Resistor R ₁₂ kanye ne-resistor 3 zixhunywe ngokulingana. I-resistor efanayo:

1/R = 1/R ₁₂ + 1/R ₃ = 1/6 + 1/6 = 2/6

R = 6/2 = 3 Ohms

Amandla kagesi:

I = V / R = 6 / 3 = 2 Ampere

8. Uyini ugesi ophelele oseketheni njengoba kuboniswe esithombeni esingezansi.

Kwaziwa:

Isithambisi R ₁ = 6 Ohm

Isithambisi R ₂ = 4 Ohm

Amandla kagesi (V) = 6 Volt

Ukumelana kwangaphakathi (r) = 0.6 Ohm

Okufunwayo: Amandla kagesi

Isixazululo:

I-Resistor R1 _kanye ne-resistor R2 _zixhunywe ngokulingana. I-resistor efanayo:

1/R _P = 1/R ₁ + 1/R ₂ = 1/6 + 1/4 = 4/24 + 6/24 = 10/24

R _P = 24/10 = 2.4 Ohm

I-Resistor R _P kanye nokumelana kwangaphakathi (r) kuxhunywe ochungechungeni. I-resistor efanayo:

R = R _P + r = 2.4 Ohm + 0.6 Ohm = 3.0 Ohm

Ugesi osebenza kusekethe:

I = V / R = 6 Volts / 3 Ohms = 2 Amps

1. Iyini isekethe kagesi?
   • Impendulo: Isekethe kagesi iyindlela noma iluphu evaliwe lapho amandla kagesi angageleza khona njalo. Ngokuvamile aqukethe imithombo yamandla kagesi (njengamabhethri), imithwalo (njengezithiyo, ama-LED, ama-motor), kanye nama-conductor ukuze awaxhume.
2. Yini ehlukanisa isekethe yochungechunge nesekethe ehambisanayo?
   • Impendulo: Kusekhethi yochungechunge, izingxenye zixhunywe kusukela ekuqaleni kuya ekugcineni, ngakho-ke kukhona indlela eyodwa yamanje. Kusekhethi ehambisanayo, izingxenye zixhunywe kumaphuzu avamile noma ezindaweni ezihlanganayo, okunikeza izindlela eziningi zamanje.
3. Umthetho ka-Ohm uhlobana kanjani ne-voltage, i-current, kanye nokumelana ne-circuit?
   • ImpenduloUmthetho ka-Ohm uthi ugesi ($I$) okugeleza ngomqhubi phakathi kwamaphuzu amabili kuhambelana ngqo ne-voltage ($V$) kuzo zombili izindawo futhi ngokulingana okuphambene nokumelana ($R$). Imelelwa njenge I=V/R​.
4. Iyini indima yeswishi kusekethe kagesi?
   • Impendulo: Iswishi ilawula ukugeleza kwamandla kagesi kusekethe. Uma ivaliwe, ivumela amandla kagesi ukuthi ageleze; uma ivuliwe, iphazamisa noma imise ukugeleza kwamandla kagesi.
5. Kungani i-short circuit ibhekwa njengeyingozi?
   • Impendulo: Kumjikelezo omfushane, ukumelana kuphansi kakhulu, okubangela ukugeleza kombane okuphezulu kakhulu. Lokhu kungaholela ekushiseni ngokweqile, emlilweni, noma ekulimaleni kwezingxenye futhi kufanele kuvikelwe ngama-fuse noma ama-circuit breaker.
6. Uyini umsebenzi we-fuse noma i-circuit breaker ku-circuit?
   • Impendulo: Ama-fuse nama-circuit breaker womabili amadivayisi okuvikela aklanyelwe ukuphazamisa isekethe uma ugesi udlula izinga elibekiwe eliphephile. Ngenkathi ama-fuse “eqhuma” noma “encibilika”, ephula isekethe, ama-circuit breaker “ekhubeka”, futhi angaphinde asethwe kabusha ngemva kokuphazamisa isekethe.
7. Umthetho Wamanje kaKirchhoff (KCL) uwuchaza kanjani ugesi ohlanganayo esiketheni?
   • Impendulo: Umthetho Wamanje kaKirchhoff uthi isamba semisinga engena endaweni yokuhlangana silingana nesamba semisinga ephuma kuleyo ndawo yokuhlangana. Lokhu empeleni kuyisitatimende sokulondolozwa kweshaja kagesi.
8. Uyini umehluko phakathi kwe-AC (Alternating Current) kanye ne-DC (Direct Current)?
   • Impendulo: I-DC ibhekisela ekugelezeni kweshaja kagesi okuqondene ngqo, ngokuvamile okuvela ebhethrini noma kugesi we-DC. I-AC, ngakolunye uhlangothi, ishaja kagesi eshintsha indlela ngezikhathi ezithile, njengalokho okunikezwa kusuka kugridi yamandla emazweni amaningi.
9. Lisho ukuthini igama elithi “umhlabathi” kumasekethe kagesi?
   • Impendulo: “Umhlabathi” ubhekisela endaweni yokubhekisela kusekethe kagesi lapho kulinganiswa khona amanye ama-voltage, noma indlela evamile yokubuya kwamandla kagesi, noma ukuxhumana okuqondile ngokomzimba noMhlaba.
10. Kungani kusetshenziswa ama-capacitor kumasekethe kagesi?

• Impendulo: Ama-capacitor agcina futhi akhiphe amandla kagesi. Asetshenziswa kumasekethe ngezinjongo ezahlukahlukene, njengokuhlunga, ukushintshashintsha kwamandla kagesi okubushelelezi, ukuhlanganisa nokuhlukanisa izimpawu ze-AC, kanye nezinto zesikhathi kuma-oscillator.