Muenzaniso weMutemo waKirchhoff

Mienzaniso mitatu yeMitemo yaKirchhoff

1. Tarisa mufananidzo we closed circuit uri padivi! Kana R₁ = 2Ω, R₂ = 4Ω, R₃ = 6Ω, zvino magetsi ari kuyerera mudunhu iri...

A. 1,2 Ampere
B. 1,0 Ampere
C. 0,6 Amperes
D. 0,5 Amperes
E. 0,2 Ampere

Kukurukurirana
Zvinozivikanwa :
Mudziviriri 1 (R)₁) = 2Ω
Mudziviriri 2 (R)₂) = 4Ω
Mudziviriri 3 (R)₃)= 6Ω
Kunobva emf 1 (E)₁) = 9 V
Kunobva emf 2 (E)₂) = 3 V
Akabvunzwa : Simba remagetsi ari kuyerera mudunhu (I)
Jawab :

Mubvunzo uyu une chekuita nemutemo waKirchhooff. Matanho uye magadzirisirwo emubvunzo uyu: Chekutanga , sarudza divi remagetsi sezvaunoda. Unogona kusarudza magetsi ari counterclockwise kana kuti achipesana newachi. Chechipiri , magetsi paanopfuura nepakati pe resistor kana resistor (R) pane kudzikira kwesimba zvekuti V = IR inenge iri negative. Chechitatu , kana magetsi achifamba kubva pa low kuenda pa high potential (- kuenda ku +) saka emf source (E) inenge iri positive nekuti pane simba rekuchaja mu emf source. Kana magetsi achifamba kubva pa high kuenda pa low potential (+ kuenda ku -) saka emf source (E) inenge iri negative nekuti pane simba rekubuda mu emf source.

Mukugadzirisa dambudziko iri, divi remagetsi rinosarudzwa kuti rienderane nedivi rewachi.
- IR₁ +E₁ - IR₂ - IR₃ - E₂ = 0
– 2 Ini + 9 – 4 Ini – 6 Ini – 3 = 0
– 12 I + 6 = 0
– 12 I = – 6
Ini = -6 / -12
Ini = 0,5

Mwenje wemagetsi unoyerera nepakati pedunhu i0,5 Amperes. Mwenje wakanaka unoratidza kuti mafambiro emagetsi ari sezvaitarisirwa, uchitenderera wachi. Mwenje usina kunaka unoratidza kuti mafambiro emagetsi ari kurwisana newachi.
Mhinduro chaiyo ndiD.

2. Tarisa mifananidzo inotevera! Huwandu hwemagetsi ari kufamba mudunhu iri...

A. 0,6 A
B. 1,2 A
C. 1,6 A
D. 2,0 A
E. 2,5 A

Kukurukurirana
Mukugadzirisa dambudziko iri, divi remagetsi rinosarudzwa kuti rienderane nedivi rewachi.
-20 – 5I -5I – 12 – 10I = 0
-32 – 20I = 0
-32 = 20I
Ini = -32 / 20
I = -1,6 Ampere
Nekuti magetsi ari pasi pesimba, divi chairo remagetsi rinotenderera newachi. Kuenda uku hakuenderane nepfungwa yekutanga yekutenderera newachi.
Mhinduro chaiyo ndiC.

3. Tarisa dhayagiramu yemagetsi inotevera! Hukuru hwemagetsi ari kuyerera mudunhu ndehwe…
A. 5/3 A
B. 8/3 A
C. 11/3 A
D. 13/3 A
E. 14/3 A
Kukurukurirana
Mukugadzirisa dambudziko iri, divi remagetsi rinosarudzwa kuti rienderane nedivi rewachi.
– ini – 6I + 12 – 2I + 12 = 0
-9I + 24 = 0
-9I = -24
Ini = 24 / 9
Ini = 8 / 3 Ampere
Nekuti magetsi aripo, mafambiro emagetsi akafanana neanofungidzirwa, kureva kuti ari munzira yekutenderera kwewachi.
Mhinduro chaiyo ndiC.

Kwakabva mubvunzo:

Mibvunzo yeNational Examination Physics yeChikoro Chesekondari/Chikoro Chepamusoro Chebasa