Isibonelo Semibuzo Yengxoxo Kagesi Oqondile
Ugesi wamanje oqondile (DC) uyinto ejwayelekile kwezobunjiniyela kanye nefiziksi. Ugesi wamanje oqondile ukugeleza kwama-electron ohlangothini olulodwa ngokusebenzisa umqhubi, ngokuvamile kusuka esigungwini esihle kuya esigungwini esibi esisesekethe. Kulesi sihloko, sizohlola izinkinga eziningana zezibonelo kanye nengxoxo yazo ehlobene nogesi wamanje oqondile ukusiza ukuthuthukisa ukuqonda kwethu ngalesi sihloko.
1. Isekethe Yochungechunge
Umbuzo 1:
Uma unikezwe isekethe yochungechunge equkethe ama-resistor amathathu, ngalinye linamanani angu-4Ω, 6Ω, kanye no-10Ω, axhunywe emthonjeni we-voltage ongu-20V. Bala ugesi ogeleza ngesekethe.
Ingxoxo:
Okokuqala, sidinga ukubala ukumelana okuphelele kusekethe yochungechunge. Kusekethe yochungechunge, ukumelana okuphelele (R_total) yisamba sokumelana ngakunye.
\[ R_{\text{total}} = R_1 + R_2 + R_3 \]
\[ R_{\text{total}} = 4Ω + 6Ω + 10Ω = 20Ω \]
Ngemva kwalokho, sisebenzisa umthetho ka-Ohm ukubala ugesi. Umthetho ka-Ohm uthi \( V = I \times R \). Ngakho-ke, ugesi (I) ungabalwa ngo:
\[ I = \frac{V}{R_{\text{total}}} \]
\[ I = \frac{20V}{20Ω} = 1A \]
Ngakho-ke, ugesi ogeleza ngesekethe ungama-ampere ama-1.
2. Isekethe Ehambisanayo
Umbuzo 2:
Ama-resistor amathathu anokumelana okungu-3Ω, 6Ω, kanye no-12Ω axhunywe ngokuhambisana futhi axhunywe emthonjeni we-voltage ongu-12V. Bala ugesi ogeleza ku-resistor ngayinye.
Ingxoxo:
Kwisekethe ehambisanayo, i-voltage (V) kuyo yonke i-resistor iyafana futhi ilingana ne-voltage yomthombo. Okokuqala, sibala i-current ngayinye sisebenzisa umthetho we-Ohm.
\[ I_1 = \frac{V}{R_1} = \frac{12V}{3Ω} = 4A \]
\[ I_2 = \frac{V}{R_2} = \frac{12V}{6Ω} = 2A \]
\[ I_3 = \frac{V}{R_3} = \frac{12V}{12Ω} = 1A \]
Ugesi ogeleza nge-resistor ngayinye ngu-4A, 2A, kanye no-1A.
Ngaphezu kwalokho, singabala inani lamandla kagesi eliphuma emthonjeni sisebenzisa umthetho wamanje kaKirchoff othi inani lamandla kagesi elingena ephuzwini lilingana namanzi aphuma kulo:
\[ I_{\text{total}} = I_1 + I_2 + I_3 = 4A + 2A + 1A = 7A \]
3. Inhlanganisela Yezijikelezo Ezilandelanayo Nezilandelanayo
Umbuzo 3:
Ama-resistor amane anamanani angu-4Ω, 6Ω, 12Ω, kanye no-12Ω ahlelwe ngesekethe ehlanganisiwe, okungukuthi i-4Ω kanye ne-6Ω ahlelwe ngochungechunge, bese umphumela uhlelwa ngokuhambisana ne-12Ω, futhi ekugcineni uhlelwe ngochungechunge ne-12Ω yesithathu. Uma umthombo we-voltage ungu-24V, nquma inani lamanje eligeleza ngesekethe.
Ingxoxo:
Isinyathelo sokuqala ukubala ukumelana kwesekethe yochungechunge lokuqala.
\[ R_{\text{series}} = 4Ω + 6Ω = 10Ω \]
Bese, sihlanganisa imiphumela engenhla ne-12Ω ngendlela efanayo.
\[ \frac{1}{R_{\text{parallel}}} = \frac{1}{10Ω} + \frac{1}{12Ω} \]
\[ \frac{1}{R_{\text{parallel}}} = \frac{6}{60} + \frac{5}{60} = \frac{11}{60} \]
\[ R_{\text{parallel}} = \frac{60}{11}Ω \cishe kube ngu-5.45Ω \]
Manje, sibeka lo mphumela ochungechungeni nge-12Ω yokugcina.
\[ R_{\text{total}} = R_{\text{parallel}} + 12Ω \]
\[ R_{\text{total}} = 5.45Ω + 12Ω = 17.45Ω \]
Ukuze sithole inani eliphelele lamandla kagesi, sisebenzisa umthetho ka-Ohm:
\[ I_{\text{total}} = \frac{V}{R_{\text{total}}} \]
\[ I_{\text{total}} = \frac{24V}{17.45Ω} \cishe 1.38A \]
4. Amandla Esiyingini
Umbuzo 4:
Uma unikezwe i-resistor enenani elingu-5Ω kanye nomsinga odlula kwi-resistor engu-2A, bala amandla ahlakazwe yi-resistor.
Ingxoxo:
Amandla (P) angabalwa kusetshenziswa ifomula:
\[ P = I^2 \izikhathi R \]
\[ P = (2A)^2 \izikhathi 5Ω \]
\[ P = 4 \izikhathi 5 = 20W \]
Ngakho-ke, amandla ahlakazwa yi-resistor angama-watts angu-20.
5. Amathuba Amaphuzu Esiyingini
Umbuzo 5:
Isekethe inezithiyo ezimbili ze-10Ω kanye ne-20Ω ngayinye exhunywe ochungechungeni nomthombo we-voltage we-30V. Bala amandla endaweni ephakathi kwezithiyo ezimbili.
Ingxoxo:
Okokuqala, sibala ugesi ogeleza ngesekethe.
\[ R_{\text{total}} = 10Ω + 20Ω = 30Ω \]
\[ I = \frac{30V}{30Ω} = 1A \]
Amandla endaweni ephakathi kwama-resistor amabili angatholakala ngokubala ukwehla kwe-voltage ku-resistor yokuqala.
\[ V_{10Ω} = I \izikhathi R_1 = 1A \izikhathi 10Ω = 10V \]
Ngakho-ke, amandla endaweni ephakathi kwama-resistor amabili ngu-\( 30V – 10V = 20V \).
Isiphetho
Lesi sihloko sixoxe ngezinkinga eziningana zezibonelo kanye nezixazululo zazo ezihlobene nezifunda zikagesi zamanje eziqondile. Lokhu kufaka phakathi izifunda ezilandelanayo, ezihambisanayo, nezihlanganisiwe, kanye nokubala amandla kanye namandla ezindaweni ezahlukene. Ukuqonda okuqinile kwale mibono eyisisekelo kubalulekile kunoma ubani ofunda ugesi kanye ne-elekthronikhi. Ukuzijwayeza njalo ngezinhlobo ezahlukene zezinkinga kuzosiza kakhulu ekuqondeni kahle lokhu okubalulekile.
