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Kana kuke magana aiki da voltage idan current yake canza

Encyclopedia
فیلڈ: Dakilin ƙasashen ilimi
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China

1. Daga Amma na Ohm

Amma na Ohm

Idan yadda ake kawo (R) ta shafi, daga amma na Ohm (I = U/R), zan iya tattara shi a matsayin U = IR. Saboda haka, idan kana da wani bayanin kananan gaba (I) da ma'anar ake kawo (R), zan iya samun tasirin juna (U) tun daga amma. Misali, idan akwai ake kawo R = 5Ω, da kuma kananan gaban I ya faru daga 1A zuwa 2A, idan I = 1A, U1 = IR = 1A × 5Ω = 5V; idan I = 2A, U2 = 2A × 5Ω = 10V.

Kyakkyawan Tabbatarwa

A cikin kyakkyawan tabbatarwa "yadda kananan gaba ya faru da tasirin juna," an yi canza kananan gaba tare da canza ake kawon potentiometer da aka fadada wa juna, da kuma ake tsari masu tasiri da juna. Idan kana da bayanai game da yadda kananan gaba ya faru a lokacin da wani abu ko wasu abubuwa, da kuma kana da ma'anar ake kawo a cikin juna (misali, ake kawo mai sauya), zan iya amfani da U=IR don in samun tasiri. Kuma a cikin wasu kyakkyowan, ana iya bincike tasiri da kuma ake tsari kananan gaba, sannan za a yi rafin I−U daga abin da aka samu. Idan kuma kana da bayanin kananan gaba, zan iya samun tasiri tare da amfani da mazaufin wannan rafi (mazaufin ya fi inganci 1/ R) da ma'anar kananan gaba. Misali, idan kananan gaban a wani lokaci ya fi
I daga rafi, da kuma ake kawo R=k1 (k mai mazaufin rafi), zan iya samun tasirin U=IR.

II. Tabbatarwa a Cikin Juna

Juna Tsakiya

A cikin juna tsakiya, tasirin juna mai uku Utotal ta shi da sum of tasiri a kan gabashin kowane babban, ya'ni, 
Utotal=U1+U2+⋯+Un. Idan kana da bayanai game da yadda tasiri ya faru a gabashin abubuwan (babu sabon babban da aka bincika tasirin) a cikin juna da tasirin juna mai uku, zan iya samun tasirin babban da kake so. Misali, a cikin juna tsakiya da ake kawon R1 da R2, da tasirin juna mai uku Utotal=10V, idan tasirin U1 a kan R1 ya faru daga 3V zuwa 4V, tare da canza kananan gaba, daga U2=Utotal−U1, idan U1=3V, U2=10V−3V=7V; idan U1=4V, U2=10V−4V=6V.

Juna Tsari

A cikin juna tsari, tasirin juna mai uku da tasirin kowane babban ta shi, ya'ni, U=U1=U2=⋯=Un. Idan kana da tasirin juna mai uku ko tasirin kowane babban, kafin kana da wani abu, zan iya samun tasiri da kuma kowane babban ta shi. Misali, a cikin juna tsari da tasirin juna mai uku 6V, kafin kana da wani abu, tasirin kowane babban ta shi ya shi 6V.

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