Mienzaniso yeMibvunzo Inotaura NezveSimba reMagineti
Simba remagineti rimwe remasimba mana akakosha mufizikisi uye rinoita basa rakakosha muzviitiko zvakasiyana-siyana zvechisikigo uye tekinoroji yemazuva ano. Kunzwisisa pfungwa iyi kunoda kunzwisisa kwakadzama kwesimba remagineti, masimba emagineti, mitemo yemagetsi, uye mashandisirwo aro muhupenyu hwezuva nezuva. Chinyorwa chino chichakurukura mienzaniso yakati wandei yezvinetso zvine chekuita nesimba remagineti, pamwe nekukurukurirana kwakadzama kubatsira vaverengi kunzwisisa pfungwa yacho zviri nani.
Kunzwisisa Simba reMagineti
Usati wakurukura nezvedambudziko iri, zvakakosha kunzwisisa hwaro hwesimba remagineti. Simba remagineti isimba rinogadzirwa nesimba remagineti uye rinoshanda pakufamba kwezvikamu zvine simba remagetsi kana zvinhu zvine simba remagineti. Simba remagineti pacharo inzvimbo iyo simba remagineti rinogona kunzwikwa. Munhu anogona kunzwa simba remagineti kana magineti maviri akabatana kana kana chinhu chine simba remagetsi chikaiswa mumunda wemagineti.
Simba remagineti rinoratidzwa nemitsetse yesimba remagineti inobuda pamucheto wekuchamhembe yopinda pamucheto wekumaodzanyemba. Uyezve, matanda emagineti ari pedyo ane matanda akatarisana anokwezvana, ukuwo matanda akafanana neaya anodzingana.
Mibvunzo yemuenzaniso nekukurukurirana
Mubvunzo 1: Munda weMagineti Wakakomberedza Waya Yakatwasuka
Waya refu yakatwasuka inotakura magetsi e5 A. Tsvaga hukuru hwesimba remagineti uri chinhambwe che 0,2 m kubva pawaya.
Kukurukurirana:
Kuti tiwane hukuru hwesimba remagineti rakatenderedza waya yakatwasuka inotakura magetsi, tinogona kushandisa mutemo weBiot-Savart, asi munyaya iyi zviri nyore kushandisa mutemo weAmpere:
Simba remagineti \( B \) rakatenderedza waya refu yakatwasuka rinogona kuverengwa uchishandisa fomura:
\[ B = \frac{\mu_0 I}{2\pi r} \]
Dimana:
– \( \mu_0 \) ndiyo nzira yekubvumidza vacuum (\( 4\pi \times 10^{-7} \, T \cdot m/A \))
– \( I \) ndiyo simba remazuva ano (A)
– \( r \) ndiko kureba kwewaya (m)
Nezviyero zvakapihwa:
– \( Ini = 5 \, A \)
– \( r = 0,2 \, m \)
Tsiva tsika idzi mufomura:
\[
B = \frac{4\pi \nguva 10^{-7} \nguva 5}{2\pi \nguva 0,2}
\]
Nyoresa:
\[
B = \frac{4\pi \times 10^{-7} \times 5}{2\pi \times 0,2} \rightarrow
B = \frac{4 \kawa 5 \kawa 10^{-7}}{2 \kawa 0,2} \museve werudyi
B = \frac{20 \times 10^{-7}}{0,4} = 5 \times 10^{-6} \, T \] kana \(5 \, \mu T\) (microtesla).
Mubvunzo 2: Simba reLorentz paZvidimbu Zvakachajwa
PARTICIPLE positively charged \(q = 1 \, \mu C\) (microCoulomb) inofamba nekumhanya \(v = 2 \times 10^4 \, m/s\) inopinda mumunda wemagineti wakafanana ne magnetic induction \(B = 0,5 \, T\) yakatarisana negwara rekumhanya kwepARTICIPLE. Verenga simba remagineti rinowanikwa nepARTICIPLE.
Kukurukurirana:
Simba remagineti (simba reLorentz) rinowanikwa nechinhu chakachajwa rinogona kuverengerwa uchishandisa fomura:
\[ F = q \cdot v \cdot B \cdot \sin(\theta) \]
Dimana:
– \( q \) ndiyo chaji yemagetsi (C)
– \( v \) ndiyo kumhanya kwezvikamu (m/s)
– \( B \) ndiyo simba remagineti (T)
– \( \theta \) ndiyo kona iri pakati pekumhanya uye gwara resimba remagineti
Muchiitiko ichi, simba remagineti rakanangana nekumhanya kwechikamu, saka
\(\theta = 90^\circ\) uye \(\sin(90^\circ) = 1\).
Zvakapihwa:
– \( q = 1 \, \mu C = 1 \kawa 10^{-6} \, C \)
– \( v = 2 \kawa 10^4 \, m/s \)
– \( B = 0,5 \, T \)
Tsiva tsika idzi mufomura:
\[
F = 1 \kawa 10^{-6} \cdot 2 \kawa 10^4 \cdot 0,5 \cdot 1 \]
Nyoresa:
\[
F = 1 \kawa 10^{-6} \kawa 10^4 \kawa 1 = 10^{-6} \kawa 0,5 = 10^{-6} \kawa 0,5 = 1 \kawa 10^{-6} \, N
\]
Mubvunzo 3: Munda weMagineti uri Pakati peChidimbu cheWaya
Antena yakatenderera (loop) ine radius ye 10 cm inopihwa ne current ye 3 A. Simba remagineti riri pakati pedenderedzwa iri rakakura sei?
Kukurukurirana:
Simba remagineti riri pakati pechitenderedzo chewaya inotakura magetsi rinogona kuverengwa uchishandisa fomura iyi:
\[
B = \frac{\mu_0 I}{2r}
\]
Dimana:
– \( \mu_0 \) ndiyo nzira yekubvumidza vacuum (\( 4\pi \times 10^{-7} \, T \cdot m/A \))
– \( I \) ndiyo simba remazuva ano (3 A)
– \( r \) ndiyo radius (10 cm = 0,1 m)
Tsiva tsika idzi mufomura:
\[
B = \frac{4\pi \times 10^{-7} \times 3}{2 \times 0,1}
\]
Nyoresa:
\[
B = \frac{4\pi \nguva 10^{-7} \nguva 3}{0,2} = \frac{12\pi \nguva 10^{-7}}{0,2} = 60 \nguva 10^{-7} \, T \]
\[ B = 6 \kawa 10^{-6} \, T \] kana \(6 \, \mu T\) (microtesla).
Mhedziso
Kunzwisisa masimba emagineti kwakakosha kufizikisi uye mashandisirwo ayo mune matekinoroji akasiyana-siyana emazuva ano. Kuburikidza nemienzaniso yakakurukurwa pamusoro apa, tinogona kuona kuti pfungwa dzakakosha dzakadai semagineti, mutemo waAmpère, uye simba reLorentz dzinoshandiswa sei mumamiriro ezvinhu chaiwo. Kugara uchidzidzira kugadzirisa matambudziko akadai kuchabatsira zvikuru mukuwedzera kunzwisisa kwako uye kuvandudza hunyanzvi hwako mufizikisi yemagineti.
Chinyorwa chino chinotarisirwa kupa mufananidzo wakajeka wekuti masimba emagineti anoshanda sei uye kuti tingaongorora sei matambudziko ane chekuita nepfungwa iyi zvakadzama uye zvakadzama.
