Isibonelo semibuzo yesekethe kagesi

Izibonelo eziyi-15 zezinkinga zesekethe kagesi

1. Bheka isithombe!

Uma u-R1 _, = 6 Ω, u-R2 ₌ R3 ₌ 2 Ω, kanti umehluko ongaba khona ungama-volt angu-14, khona-ke ubukhulu bokugeleza kwamandla kagesi...

A. 7 A

B. 6 A

C. 2 A

D. 1 A

Ingxoxo

Kuyaziwa ukuthi:

Isithambisi 1 (R1 ₎ = 6 Ω

Isithambisi 2 (R2 ₎ = 2 Ω

Isithambisi 3 (R3 ₎ = 2 Ω

Umehluko ongaba khona (V) = 14 Volts

Umbuzo : Ingabe ugesi ugeleza ngamandla kangakanani?

Impendulo:

Bala i-resistor yokufaka esikhundleni (R):

I-R2 _kanye ne-R3 _zixhunywe ngokulingana. Ama-resistor angena esikhundleni yilawa:

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 yokufaka esikhundleni yile:

_R = R1 ₊ R23 = 6 Ω + 1 Ω

R = 7Ω

Bala amandla wamanje (I):

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

Impendulo efanele ngu-C.

2. Uma i-resistor ngayinye inenani elifanayo futhi ifakiwe ngomehluko ofanayo wamandla, khona-ke isekethe enenani lamanje elikhulu kakhulu...

Ingxoxo

Ake sithi inani le-resistor ngayinye lingu-R kanti umehluko ongaba khona ungu-V.

Impendulo efanele ingu-B.

3. Bheka isithombe!

Uma iswishi i- _S2 ixhunyiwe, isiqondiso esifanele samandla kagesi siboniswa yiphuzu...

A. A – B – E – F

B. B – C – D – F

C. A – C – D – F

D. F – E – B – A

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Ugesi uhamba usuka endaweni enamandla amakhulu uye endaweni enamandla aphansi. Uma iswishi s2 ivaliwe (iswishi s2 iseduze nephuzu A), khona-ke ugesi uhamba usuka ku-A uye ku-B uye ku-E uye ku-F. Ugesi awuhambi uye ku-C no-D ngoba u-C no-D basesikethini esivulekile.

Impendulo efanele ngu-A.

4. Bheka isithombe esilandelayo!

Uma u-R1 ₌ 4 ohms, u-R2 ₌ 6 ohms, u- _R3 = 2 ohms, kanye no-V = 24 volts, khona-ke inani lamandla kagesi ageleza kusekethe...

A. 0,5 ampere

B. 1 ampere

C. 2 ampere

D. 12 ampere

Ingxoxo

Kuyaziwa ukuthi:

Isivikelo 1 (R1 ₎ = 4 Ohm

Isivikelo 2 (R2 ₎ = 6 Ohm

Isivikelo 3 (R3 ₎ = 2 Ohm

I-voltage kagesi (V) = 24 Volts

Kubuziwe: Amandla kagesi ogeleza kusekethe

Impendulo:

_{Ama -} R1 , R2 _kanye no-R3 _axhunywe ngokulandelana. Ama-resistor angena esikhundleni yilawa:

_R = R1 ₊ R2 + R3 ₌ 4 + 6 + 2

R = 12 Ohm

Ugesi ogeleza kusekethe:

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

Impendulo efanele ngu-C.

5. Bheka isithombe! Isibani esinogesi ofana nogesi odlula emthonjeni we-emf...

A. L₁

B. L ₂

C. L ₃

D. L ₄

Ingxoxo

Umthetho Wokuqala kaKirchhoff uthi ugesi odlula egatsheni uzohlukana. Isibonelo, uma ugesi ogeleza usuka emthonjeni we-emf ungama-Ampere ama-4, uma ungena emagatsheni amabili, lo gesi uhlukaniswa kabili, ucingo ngalunye luphethe ugesi wama-Ampere ama-2. Ugesi wama-Ampere ama-2 uhlukaniswa kabili uma ugesi ungena egatsheni elinamagatsha amabili. Kodwa-ke, ngokusho kwesithombe esingenhla, ugesi ohlukanisiwe ekugcineni uhlangana futhi.

Ngakho-ke ngokusekelwe esithombeni esingenhla, isibani esinogesi ofana nogesi odlula emthonjeni we-emf yilambu lesibili (L2 ₎ elitholakala eduze kwekhoneni eliphezulu kwesokudla.

Impendulo efanele ingu-B.

6. Kusukela kumdwebo wesekethe olandelayo, yimuphi ozoqhuba ugesi omkhulu kunayo yonke?

Ingxoxo

Ugesi osesekethe A.

Isithambisi sokuthatha indawo (R):

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

I-R2 _kanye ne-R3 _zixhunywe ngokulingana. Ama-resistor angena esikhundleni yilawa:

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 yokufaka esikhundleni yile:

R = R ₁ + R ₂₃ = 3 Ω + 2 Ω = 5 Ω

Amandla kagesi (I):

I = V / R = 12 / 5 = 2,4 Ampere

Ugesi osesekethe B.

Isithambisi sokuthatha indawo (R):

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

_{Ama -} R1 , R2 kanye no-R3 _{axhunywe ngokulandelana} . Ama-resistor angena esikhundleni yilawa:

R = R1 ₊ R2 + _{R3 =} 8 + 2 + 2 = 12 Ω

Amandla kagesi (I):

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

Ugesi osesekethe C.

Isithambisi sokuthatha indawo (R):

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

I-R2 _kanye ne-R3 _zixhunywe ngokulingana. Ama-resistor angena esikhundleni yilawa:

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

Amandla kagesi (I):

I = V / R = 12 / 1,5 = 8 Ampere

Ugesi osebenza ku-circuit D.

Isithambisi sokuthatha indawo (R):

R₁ = 3 Ω, R₂ = 3 Ω, R₃ = 3 Ω, R₄ = 3 Ω, R₅ = 6 Ω, V = 24 Volt

_{Ama -} R2 , R3 _kanye no-R4 _axhunywe ngokulingana. Ama-resistor angena esikhundleni yilawa:

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

_{Ama -} R1 , R234 _kanye no-R5 _axhunywe ngokulandelana. Ama-resistor angena esikhundleni yilawa:

_R = R1 ₊ R234 + R5 ₌ 3 + 1 + 6 = 9 Ω

Amandla kagesi (I):

I = V / R = 24 / 9 = 2,6 Ampere

Impendulo efanele ngu-C.

7. Naka uchungechunge olulandelayo!

Nquma:

A. Ukumelana okuphelele

B. Ubukhulu bomsinga osesekethe

C. Okwamanje I ₁

D. Okwamanje I ₂

Ingxoxo

Kuyaziwa ukuthi:

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

Impendulo:

A. Ukumelana okuphelele (R)

Ama-Resistors R ₂ kanye no-R ₃ axhunywe ngokulandelana. Ama-resistors angena esikhundleni yilawa:

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 yokufaka esikhundleni yile:

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 ngokulandelana. I-resistor yokufaka esikhundleni yile:

R = R ₁ + R ₂₃₄ = 4 Ω + 2 Ω = 6 Ω

Ngakho-ke ukumelana okuphelele kungama-6 Ohms.

B. Ubukhulu bomsinga kagesi esiketheni (I)

Ifomula echaza ubudlelwano phakathi kwe-voltage, i-current kanye ne-resistance yile:

V = IR

Incazelo yefomula: V = I-voltage kagesi, I = ugesi wamanje, R = ukumelana kagesi

Sebenzisa le fomula ukuze ubale amandla kagesi:

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

C. Okwamanje I₁

Ugesi odlula nge-resistor R ₁ = ugesi odlula nge-circuit = 2 Amperes.

D. Okwamanje I₂

Ngaphambi kokubala ugesi odlula ku-resistor R₂, qala ulalele incazelo elandelayo.

Ama-Resistors R ₂₃ kanye ne -R ₄ axhunywe ngokuhambisana. I-resistor yokufaka esikhundleni esekelwe ekubalweni kwangaphambilini ingu -R ₂₃₄ = 2 Ohm.

Ugesi odlula nge-resistor R ₂₃₄ = ugesi odlula nge-resistor R ₁ = 2 Amperes.

Umehluko ongaba khona phakathi kwezinhlangothi ezimbili ze-resistor R₂₃₄ ngu:

V = IR ₂₃₄ = (2 A)(2 Ohm ) = 4 Volts

Umehluko ongaba khona phakathi kwezinhlangothi ezimbili ze-resistor R ₂₃₄ = umehluko ongaba khona phakathi kwezinhlangothi ezimbili ze-resistor R ₄ = umehluko ongaba khona phakathi kwezinhlangothi ezimbili ze-resistor R ₂₃ = 4 Volts.

I-resistor yokufaka esikhundleni i-R ₂₃ ngokusekelwe emiphumeleni yokubala yangaphambilini ingu -6 Ohms.

Ngakho-ke ugesi odlula ku-resistor esikhundleni R₂₃ ngu:

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

Ugesi odlula nge-resistor R ₂₃ = ugesi odlula nge-resistor R ₂ = ugesi odlula nge-resistor R ₃ = 2/3 Ampere.

8. Bheka isekethe kagesi ohlangothini! Uma u-R ₁ = R ₂ = 10 Ω kanye no-R ₃ = R ₄ = 8 Ω. Kugeleza ugesi ongakanani (I)?

A. 0,5 A

B. 2 A

C. 36 A

D. 288 A

Ingxoxo

Kuyaziwa ukuthi:

Isithambisi R ₁ = Isithambisi R ₂ = 10 Ω

Isithambisi R ₃ = Isithambisi R ₄ = 8 Ω

I-voltage kagesi (V) = 12 Volts

Umbuzo: Amandla kagesi (I) ogeleza

Impendulo:

Isithambisi sokufaka esikhundleni (R).

I-Resistor R3 _kanye ne-resistor R4 _zixhunywe ngokuhambisana, i-resistor yokufaka esikhundleni yile:

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 _axhunywe ngokulandelana, ama-resistors angena esikhundleni yilawa:

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

Impendulo efanele ngu-A.

9. Bheka isithombe sesekethe kagesi evaliwe ohlangothini! Uma ukumelana ebhethri kunganakwa, khona-ke ugesi (I) ogeleza kusekethe…..

A. 0,5 Ama-Ampere

B. 1 Ampere

Ama-Ampere angu-C. 2

D. 3 Ampere

Ingxoxo

Kuyaziwa ukuthi:

Isithambisi R ₁ = 3 Ohm

Umphikisi R ₂ = 3 Ohm

Isithambisi R ₃ = 6 Ohm

I-voltage kagesi (V) = 6 Volts

Umbuzo: Amandla kagesi (I)

Impendulo:

Bala i-resistor yokufaka esikhundleni:

Ama-Resistors R ₁ kanye no-R ₂ axhunywe ngokulandelana. Ama-resistors angena esikhundleni yilawa:

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

I-Resistor R12 kanye ne-resistor 3 zixhunywe ngokulingana. I-resistor yokufaka esikhundleni yile:

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

Impendulo efanele ngu-C.

10. Bheka umdwebo wesekethe evaliwe ngezansi! Ugesi ophelele wesekethe…..

A. 0,5 A

B. 0,6 A

C. 1,2 A

D. 2,0 A

Ingxoxo

Kuyaziwa ukuthi:

Isithambisi R ₁ = 6 Ohm

Isithambisi R ₂ = 4 Ohm

I-voltage kagesi (V) = 6 Volts

Ukumelana kwangaphakathi (r) = 0,6 Ohm

Umbuzo: Ugesi ophelele wesekethe

Impendulo:

Umphikisi R₁ kanye ne-resistor R₂ ixhunywe ngokulingana. I-resistor yokufaka esikhundleni yile:

1/R _P = 1/R1 + 1/R2 = 1/6 + 1/4 = 4/24 + 6/24 = 10/24

R _P = 24/10 = 2,4 Ohm

Umphikisi R_P futhi ukumelana kwangaphakathi (r) kuxhunywe ochungechungeni. Ukumelana okulinganayo yilokhu:

R = R _P + r = 2,4 Ohm + 0,6 Ohm = 3,0 Ohm

Inani lamandla kagesi eliphelele kusekethe yileli:

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

Impendulo efanele ngu-D.

11.

Bheka isekethe kagesi ohlangothini! Ubukhulu be-voltage V…

A. 9,6 Volt
B. 6,4 Volt
C. 4,5 Volt
D. 3,2 Volt

Ingxoxo

Kuyaziwa ukuthi:
Isivikelo 1 (R)₁) = 16 Ohms
Isivikelo 2 (R)₂) = 8 Ohms
Isivikelo 3 (R)₃) = 6 Ohms
Amandla kagesi (I) = 2 Ampere
Umbuzo: I-voltage kagesi (V)
Impendulo:
Isithambisi sokufaka esikhundleni
R₁ kanye no-R₂ ixhunywe ochungechungeni. I-resistor yokufaka esikhundleni yile:
R_A =R₁ + R₂ = 16 + 8 = 24 Ohms
R_A kanye no-R₃ ixhunywe ngokulingana. I-resistor yokufaka esikhundleni yile:
1/R = 1/R_A +1/R₃ = 1/24 + 1/6
1/R = 1/24 + 4/24 = 5/24
R = 24/5 = 4,8 Ohms
I-voltage kagesi :
V = IR = (2)(4,8) = 9,6 Volts
Impendulo efanele ngu-A.

12. Bheka umdwebo wesekethe kagesi ohlangothini! Uma ukumelana emthonjeni we-voltage kunganakwa, khona-ke i-voltmeter V ikhombisa i-voltage elinganisiwe ye...

A. 4 V
B. 6 V
C. 9 V
D. 10 V

Ingxoxo

Kuyaziwa ukuthi:
Isivikelo 1 (R)₁) = 3,6 Ohms
Isivikelo 2 (R)₂) = 6 Ohms
Isivikelo 3 (R)₃) = 4 Ohms
Amandla kagesi (I) = 1,5 Ampere
Umbuzo: I-voltage kagesi (V)
Impendulo:
Isithambisi sokufaka esikhundleni
R₂ kanye no-R₃ ixhunywe ngokulingana. I-resistor yokufaka esikhundleni yile:
1 / R_A = 1/R₂ +1/R₃ = 1/6 + 1/4
1 / R_A = 2/12 + 3/12 = 5/12
R_A = 12/5 = 2,4 Ohms
R₁ kanye no-R_A ixhunywe ochungechungeni. I-resistor yokufaka esikhundleni yile:
R = R₁ + R_A = 3,6 + 2,4 = 6 Ohms
I-voltage kagesi :
V = IR = (1,5)(6) = 9 Volts
Impendulo efanele ngu-C.

13.
Bheka umdwebo olandelayo wesekethe kagesi evaliwe! Uma ukumelana emthonjeni we-voltage E kunganakwa, khona-ke i-voltmeter V ikhombisa i-voltage elinganisiwe ye...
A. 2 V
B. 4 V
C. 6 V
D. 12 V
Ingxoxo
Kuyaziwa ukuthi:
Isivikelo 1 (R)₁) = 3 Ohms
Isivikelo 2 (R)₂) = 2 Ohms
Isivikelo 3 (R)₃) = 4 Ohms
Amandla kagesi (I) = 2 Ampere
Umbuzo: I-voltage kagesi (V)
Impendulo:
Isithambisi sokufaka esikhundleni
R₂ kanye no-R₃ ixhunywe ochungechungeni. I-resistor yokufaka esikhundleni yile:
R_A =R₂ + R₃ = 2 + 4 = 6 Ohms
R₁ kanye no-R_A ixhunywe ngokulingana. I-resistor yokufaka esikhundleni yile:
1/R = 1/R₁ +1/R_A = 1/3 + 1/6
1/R = 2/6 + 1/6 = 3/6
R = 6/3 = 2 Ohms
I-voltage kagesi :
V = IR = (2)(2) = 4 Volts
Impendulo efanele ingu-B.

14. Kumdwebo wesekethe kagesi olandelayo, u-A, B, C, D no-E yizibani ezifanayo ze-incandescent.

Uma isibani B sisusiwe, isibani esikhanyisa kakhulu...

A. izibani A no-C

B. izibani A no-D

C. izibani C no-D

D. izibani C no-E

Izibani ze-E. D kanye ne-E

Ingxoxo

Izibani ezinhlanu ezifanayo ze-incandescent zisho ukuthi isibani ngasinye sinokuphikiswa okufanayo.

Ngenxa yokuthi ukumelana kuyafana, ukukhanya kwesibani kuncike kuphela emandleni kagesi ageleza phakathi kwesibani.

Ngokomthetho wokuqala kaKirchhoff, ugesi odlula ezibanini u-D no-E uyafana ngoba zixhunywe ngochungechunge, kuyilapho ugesi odlula esiketheni esihambisanayo uzohlukaniswa.

Uma isibani B sisusiwe, izibani ezikhanya kakhulu yizibani D no-E, lapho zombili izibani zinelangabi elifanayo elikhanyayo.

Impendulo efanele ngu-E.

15. Bheka umdwebo olandelayo wesekethe kagesi!

Uma umthombo we-voltage unomehluko ongaba khona wama-volt angu-24, ugesi endaweni yegatsha I…

A. 1,2 A

B. 2,0 A

C. 2,4 A

D. 3,0 A

Ingxoxo

Kuyaziwa ukuthi:

Umthombo we-EMF (E) = 24 Volts

Ukumelana kwangaphakathi (r) = 2 Ohm

Ama-Resistors angu-40 Ohm, 20 Ohm kanye no-20 Ohm.

Umbuzo: Amandla amanje endaweni yegatsha I

Impendulo:

Ama-resistor amathathu axhunywe ngokufana, ama-resistor angena esikhundleni yilawa:

1/R = 1/40 + 1/20 + 1/20

1/R = 1/40 + 2/40 + 2/40

1/R = 5/40

R = 40/5

R = 8 Ohm

I-voltage yokubopha:

V = E – I r

V = 24 – I 2

Amandla amanje endaweni yegatsha I:

V = IR

24 – I 2 = I 8

24 = I 8 + I 2

24 = I (10)

I = 24/10

I = 2,4 Ampere

Impendulo efanele ngu-C.

Umthombo wombuzo:

Imibuzo Yokuhlolwa Kazwelonke Yesayensi Yesikole Samabanga Aphansi/Isikole SamaSulumane Samabanga Aphakeme

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