Vatan himoyasi

Ishning natijasi:
__ O`tkazgichlarni ketma-ket tutashtirish uchun qoida:
I=I₁=I₂=I₃
U=U₁+U₂+U₃ R=R₁+R₂+R₃

O`tkazgichlarni parallel tutashtirish uchun qoida:

I=I₁+I₂+I₃
U=U₁=U₂=U₃


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I	U1	U2	U=U1+U2	R1=U1/I	R2=U2/I	R=U/I	R=R1+R2

U	I1	I2	I=I1+I2	R1=U/I1	R2=U/I2	R=U/I	R=R1R2/(R1+R2)

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Bahosi: ________ Tekshirdi :_____________________________
№5Laboratoriya ishi
ELEKTROMAGNITNI YIG'ISH VA ISHLASHINI SINASH


Kerakli jihozlar : akkumulator, reostat, kalit, ulovchi simlar, kompas, g'altak,
temir o'zak, o'zagi taqasimon bo'lgan elektromagnit.
Ishning o’rinlanishi:
1. Elektromagnit olamiz va uni bo’laklarga ajiratib o’rganamiz.
Katushka, o’zak, yakor vazifalarini takrorlaymiz.
2. Quiyidagi rasmda ko’rsatilgan elektromagnitni yig’amiz. Reostatorning surgichini eng ulkan qarshiliq bo’ladigan halqaga qo’yamiz.

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K

R
3. Kalitni yig’amiz. Elektromagnitga yakorni yaqinlashtiramiz tortishini kuzatamiz.

4. Reostat qarshiligini asta – sekin kamaytiramiz va elektromagnitdan o’tuvchi tokni orttiramiz. Elektromagnitning yakorni tortishin tekshiramiz.
5. Magnit strelkasi yordamida elektromagnitning qutblarini aniqlaymiz. Buning uchun elektromagnit yakori yoniga magnit strelkasini yaqinlashtiramiz. Strelka burilishiga qarab javob chiqaramiz.
6. Yakordagi ilmoqqa 100 g massali yuk osamiz. Yuklarni asta-sekin orttirib boramiz. Tushib ketganda noqulay holat yuzaga kelmesligi uchun yuk tushadigan joyga yumshoq materialdan qoyamiz.
7. Kaliltni o’chiramiz. Bunda yakor yuk bilan birga elektromagnitdan ajraladi va stol ustiga tushadi.
Javoblar:
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