Ihe atụ nke Ajụjụ Ike Ọkụ Eletriki
Ọkụ eletrik bụ echiche dị mkpa na fizikisi nke dị oke mkpa ịghọta, ọkachasị n'ihe gbasara sekit eletriki. A na-akọwa ọkụ eletrik, nke akara I na-egosi, dị ka ego ọkụ eletrik na-agafe n'otu isi na sekit kwa oge nkeji. Nkeji nke ọkụ eletrik bụ Ampere (A), ebe 1 Ampere hà nhata 1 Coulomb nke chajị na-agba kwa sekọnd. N'isiokwu a, anyị ga-atụle ọtụtụ ihe atụ nke nsogbu metụtara ọkụ eletrik na otu esi edozi ha.
Isi ihe dị mkpa nke Ike Ọkụ Eletriki
Tupu anyị abanye n'ajụjụ ndị a, ka anyị leba anya n'echiche bụ isi nke ọkụ eletrik. Enwere ike ịhazi ọkụ eletrik dị ka:
\[ I = \frac{Q}{t} \]
Ebe:
– \(I\) bụ ọkụ eletrik (A),
– \(Q\) bụ ego nke chajị eletriki na-asọ (C),
– \(t\) bụ oge achọrọ (s).
Na mgbakwunye, iwu Ohm dịkwa oke mkpa n'ihe gbasara ike ọkụ eletrik, nke a na-ekwu dịka:
\[V = I \cdot R \]
Ebe:
– \(V\) bụ voltaji (V),
– \(I\) bụ ọkụ eletrik (A),
– \(R\) bụ iguzogide eletriki (Ω).
Ajụjụ Ihe atụ nke 1: Ịgbakọ Ike Ugbu a
Ajụjụ: Chajị nke Coulombs iri na-agafe waya ruo sekọnd ise. Gbakọọ ọkụ eletrik na-agafe na waya ahụ.
Ngwọta:
Anyị nwere ike iji usoro bụ isi maka ike ọkụ eletrik:
\[ I = \frac{Q}{t} \]
Tinye ụkpụrụ \(Q\) na \(t\):
\[ I = \frac{10}{5} \]
\[ I = 2 \, \ederede{A} \]
Ya mere, ọkụ eletrik na-asọfe na waya ahụ bụ 2 amperes.
Ajụjụ Ihe atụ nke 2: Iji Iwu Ohm mee ihe
Ajụjụ: A na-ejikọ resistor nwere nguzogide nke 50 Ω na isi iyi voltaji 10 V. Gbakọọ ọkụ eletrik na-agafe na resistor ahụ.
Ngwọta:
Anyị nwere ike iji iwu Ohm gbakọọ ike dị ugbu a:
\[ I = \frac{V}{R} \]
Tinye ụkpụrụ \(V\) na \(R\):
\[ I = \frac{10}{50} \]
\[ I = 0.2 \, \ederede{A} \]
Ya mere, ike nke ugbu a na-agafe na resistor bụ 0.2 amperes.
Ajụjụ Ihe Nlereanya nke 3: Usoro Sekọndrị
Ajụjụ: A na-ejikọ resistors atọ nke ọ bụla nwere resistors nke 10 Ω, 20 Ω, na 30 Ω n'usoro ma jikọọ ya na isi iyi voltaji 60 V. Gbakọọ ọkụ eletrik na-agafe na sekit ahụ.
Ngwọta:
N'ime sekit usoro, nguzogide zuru oke (\(R_{total}\)) bụ ngụkọta nke nguzogide niile:
\[ R_{mkpokọta} = R_1 + R_2 + R_3 \]
\[ R_{ngụkọta} = 10 + 20 + 30 \]
\[ R_{nkpokọta} = 60 \, \ederede{Ω} \]
Jiri iwu Ohm gbakọọ ugbu a:
\[ I = \frac{V}{R_{mkpokọta}} \]
\[ I = \frac{60}{60} \]
\[ I = 1 \, \ederede{A} \]
Ya mere, ike ugbu a na-agafe na sekit ahụ bụ 1 Ampere.
Ajụjụ Ihe Nlereanya nke 4: Sekit Parallel
Ajụjụ: Ejikọtara resistors abụọ nke ọ bụla nwere resis 40 Ω na 60 Ω n'otu oge ma jikọọ na isi iyi voltaji 24 V. Gbakọọ ọkụ eletrik na-agafe resistor ọ bụla.
Ngwọta:
Na sekit parallel, voltaji dị n'ofe resistor ọ bụla bụ otu, ya bụ 24 V. Jiri iwu Ohm maka resistor ọ bụla:
Maka ihe mgbochi ike 40 Ω:
\[ I_1 = \frac{V}{R_1} \]
\[ I_1 = \frac{24}{40} \]
\[ I_1 = 0.6 \, \ederede{A} \]
Maka ihe mgbochi ike 60 Ω:
\[ I_2 = \frac{V}{R_2} \]
\[ I_2 = \frac{24}{60} \]
\[ I_2 = 0.4 \, \ederede{A} \]
Yabụ, ọkụ eletrik nke na-agafe na resistor 40 Ω bụ 0.6 Amperes, site na resistor 60 Ω bụ 0.4 Amperes.
Ajụjụ Ihe Nlereanya nke 5: Iji Iwu Kirchoff
Ajụjụ: N'ime sekit, alaka atọ dị iche iche nwere ọkụ eletrik nke 2 A, 3 A, na 4 A nke na-ezute n'otu ebe. Gbakọọ mkpokọta ọkụ eletrik na-esi na ebe ahụ apụta.
Ngwọta:
Jiri iwu Kirchoff (KCL) nke dị ugbu a, nke na-ekwu na ngụkọta nke mmiri ozuzo na-abanye na isi ihe hà nhata na ngụkọta nke mmiri ozuzo na-ahapụ isi ihe ahụ. Ọ bụrụ na \(I_{in}\) bụ mkpokọta nke mmiri ozuzo na-abata, mgbe ahụ:
\[ I_{in} = I_1 + I_2 + I_3 \]
\[ I_{in} = 2 + 3 + 4 \]
\[ I_{in} = 9 \, \text{A} \]
Ya mere, mkpokọta ọkụ eletrik na-asọpụta site na isi ihe ahụ bụ 9 amperes.
Ihe atụ Ajụjụ nke 6: Ịgbakọ ụgwọ site na Ike Ugbu a
Ajụjụ: Ọ bụrụ na waya agafee site na ọkụ eletrik nke 5 A ruo sekọnd iri, gbakọọ ego chajị na-agafe na waya ahụ.
Ngwọta:
Jiri usoro bụ isi maka ike ọkụ eletrik:
\[ Q = I \cdot t \]
Tinye ụkpụrụ \(I\) na \(t\):
\[ Q = 5 \cdot 10 \]
\[ Q = 50 \, \ederede{C} \]
Ya mere, ego chajị na-agafe na waya ahụ bụ 50 Coulombs.
Mmechi
Ịghọta ọkụ eletrik dị oke mkpa n'ọmụmụ ihe gbasara physics na injinia eletriki. Site na ihe atụ ndị dị n'elu, anyị ahụla otu esi etinye echiche bụ isi nke ọkụ eletrik na iwu ndị metụtara ya n'ọrụ iji dozie ọtụtụ nsogbu dị iche iche. Mme nsogbu ndị dị ka ndị a anaghị enyere aka mee ka nghọta anyị banyere ozizi ahụ sikwuo ike kamakwa ọ na-enye nkà bara uru na nyocha sekit eletriki. Site n'ịnọgide na-eme ihe ma ghọta echiche ndị a, anyị nwere ike ịghọ ndị ọkachamara n'ịdozi ihe ịma aka metụtara ọkụ eletrik ma na ndụ kwa ụbọchị ma na ọnọdụ ọkachamara.
