Ihe atụ nke Ajụjụ Ndị Na-ekwu Maka Ike Eletriki
Ike eletriki bụ echiche dị oke mkpa na physics na injinia eletriki nke anyị na-ezutekarị na ndụ anyị kwa ụbọchị. Nghọta dị mma nke ike eletriki nwere ike inyere anyị aka n'akụkụ dị iche iche nke ndụ anyị, site na nchekwa ike ruo na ojiji ike dị irè karị. Isiokwu a ga-atụle ọtụtụ ihe atụ nke nsogbu ike eletrik, nke anyị nwere olileanya na ọ ga-eme ka nghọta gị banyere echiche a dịkwuo omimi.
Ịghọta Ike Eletriki
A na-akọwa ike eletriki dịka ọnụego mmiri nke ike eletriki nke sekit eletriki na-ebufe kwa nkeji oge. N'ihe gbasara mgbakọ na mwepụ, a na-atụkarị ike eletriki (P) na watts (W) ma enwere ike ịgbakọ ya site na iji usoro a:
\[ P = VI \]
ebe \(V \) bụ voltaji dị na volt (V) na \(I \) bụ ọkụ eletrik dị na amperes (A).
Na mgbakwunye, enwere ike ịgbakọ ike eletrik dabere na nguzogide (R) na ọkụ eletrik site na iji usoro a:
\[ P = I^2 R \]
ma ọ bụ dabere na nguzogide na voltaji na usoro:
\[ P = \frac{V^2}{R} \]
Ajụjụ na Mkparịta ụka Ihe Nlereanya
Ajụjụ Ihe atụ nke 1: Ịgbakọ Ike Eletriki
Ajụjụ:
Oriọna nwere ike iguzogide 240 ohms ma jikọọ ya na isi iyi volt 120. Gbakọọ ike ọkụ eletrik nke oriọna ahụ na-eri.
Azịza:
Anyị nwere ike iji usoro ike dabere na voltaji na nguzogide:
\[ P = \frac{V^2}{R} \]
A maara:
– \( V = 120 \) Volt
– \( R = 240 \) ohm
Tinye ụkpụrụ ndị ahụ n'ime usoro ahụ:
\[ P = \frac{120^2}{240} \]
\[ P = \frac{14400}{240} \]
\[ P = 60 \] Watt
Ya mere, ike ọkụ eletrik nke oriọna ahụ na-eji bụ 60 Watts.
Ihe atụ Ajụjụ nke 2: Ịgbakọ Ọkụ Eletriki Dabere na Ike na Voltaji
Ajụjụ:
Ngwaọrụ eletrọnịkị chọrọ watt 150 nke ike ma jikọọ ya na isi iyi ike volt 230. Gbakọọ ike ọkụ na-agafe na ngwaọrụ ahụ.
Azịza:
Anyị nwere ike iji usoro bụ isi maka ike eletrik:
\[ P = VI \]
A maara:
– \( P = 150 \) watt
– \(V = 230 \) volt
Site na usoro a, enwere ike ịgbakọ ugbu a (I) dị ka:
\[ I = \frac{P}{V} \]
Tinye ụkpụrụ ndị ahụ n'ime usoro ahụ:
\[ I = \frac{150}{230} \]
\[ I \ihe dị ka 0.652 \] amperes
Ya mere, ọnụọgụ ọkụ eletrik na-agafe na ngwaọrụ ahụ dị ihe dịka 0.652 amperes.
Ihe atụ nke atọ: Ịgbakọ Ike na Nguzogide A Maara
Ajụjụ:
Ọ bụrụ na ọkụ eletrik nke amperes ise na-agafe resistor nke nwere nguzogide nke 10 ohms, ike eletrik ole ka a na-emepụta?
Azịza:
Anyị nwere ike iji usoro ike dabere na nguzogide na ugbu a:
\[ P = I^2 R \]
A maara:
– \( I = 5 \) amperes
– \( R = 10 \) ohm
Tinye ụkpụrụ ndị ahụ n'ime usoro ahụ:
\[ P = 5^2 \ugboro 10 \]
\[ P = 25 \ugboro 10 \]
\[ P = 250 \] watt
Ya mere, ike eletrik nke resistor mepụtara bụ 250 watts.
Ihe atụ Ajụjụ nke 4: Ịgbakọ voltaji dabere na ike na ugbu a
Ajụjụ:
Ngwaọrụ eletrọnịkị na-eri ike watt 75 mgbe ọkụ eletrik nke 0.5 ampere na-agafe na ya. Kedu voltaji e tinyere na ngwaọrụ ahụ?
Azịza:
Anyị nwere ike iji usoro bụ isi maka ike eletrik:
\[ P = VI \]
A maara:
– \( P = 75 \) watt
– \( I = 0.5 \) amperes
Site na usoro a, enwere ike ịgbakọ voltaji (V) dị ka:
\[V = \frac{P}{I} \]
Tinye ụkpụrụ ndị ahụ n'ime usoro ahụ:
\[ V = \frac{75}{0.5} \]
\[ V = 150 \] volt
Ya mere, voltaji etinyere na ngwaọrụ ahụ bụ 150 volts.
Ajụjụ Ihe atụ nke 5: Ịgbakọ Oge Ojiji Dabere na Ike na Ike
Ajụjụ:
Ngwa eletriki nwere ike nke watt 500, a na-ejikwa ya arụ ọrụ nke chọrọ joules 3000 nke ike. Ogologo oge ole ka a ga-eji ya?
Azịza:
A maara na enwere ike ịgbakọ ike (E) na joules dabere na ike (P) na oge (t) site na iji usoro a:
\[ E = P \ugboro t \]
A maara:
– \( E = 3000 \) joules
– \( P = 500 \) watt
Site na usoro a, enwere ike ịgbakọ oge (t) dị ka:
\[t = \frac{E}{P} \]
Tinye ụkpụrụ ndị ahụ n'ime usoro ahụ:
\[ t = \frac{3000}{500} \]
\[ t = 6 \] sekọnd
Ya mere, a na-eji ngwaọrụ ahụ eme ihe maka sekọnd isii iji rụọ ọrụ nke chọrọ joules 3000 nke ike.
Mmechi
Nghọta dị mkpa maka ike eletriki dị na fisiksi na ojiji kwa ụbọchị. Site na ihe atụ na mkparịta ụka dị n'elu, anyị nwere ike ịhụ otu esi eji usoro dị mfe agbakọ paramita dị iche iche metụtara ike eletriki, gụnyere ike n'onwe ya, voltaji, ugbu a, nguzogide, na ike. Enwere m olileanya na isiokwu a emeela ka nghọta na nkà gị gbasaa n'ịghọta echiche nke ike eletriki. Hụ na ị na-eji ngwa eletriki nke ọma na nke ọma iji chekwaa ike na ego.
