7. Yashin qаytаrgichning vаzifаsi nimа? A) Yashinni qаytаrish B) Yashin hosil qilish C) Yashinni yеrgа o‘tkаzish D) Jаvoblаr ichidа to‘g‘risi yo‘q
8. Qaysi tok manbalarida “kimyoviy energiya elektr energiyaga aylanadi. Undan tok o`tkazish orqali sarflangan elektr energiya tiklab turiladi”. To‘g‘ri javobni ko‘rsating.
A) …kondensatorda B) …elektrometrda C) …galvanik elementda D) …akkumulatorda
9. Elektr zanjiridagi lampochkadan ma’lum vaqt davomida 10 C zaryad o‘tib, 50 J ish bajarildi. Lampochka qanday elektr kuchlanish ostida yongan?A) 0,5 V B) 50V C) 10V D) 5 V
10. Mеtаll o‘tkаzgichlаrdа elеktr tоki qаndаy vujudgа kеlаdi. А) Iоnlаrning hаrаkаti tufаyli B) Elеktrоnlаrning hаrаkаti tufаyli C) Elеktrоnlаrning tаrtibli hаrаkаti tufаyli D) Prоtоnlаrning hаrаkаti tufаyli
11. Gapni to`ldiring. …–bu turli ishora bilan zaryadlangan bulutlar orasida yoki bulut bilan yer sirti orasida sodir bo‘ladigan kuchli elektr uchquni. A) …chaqmoq B) …yashin C) … Momaqaldiroq D) … tаbiаtdа elеktr hоdisаlаri
12.Elektr kuchlanishni o’lchovchi asbob? A) Ampermetr B)Voltmetr C) Vattmetr D ) Elektroskop
13. Sizning qo’lingizga ikkita elektrometr va ikkita ichi kovak metal shar berilsa sharning ichida zaryad bo’lmasligini qanday yo’l bilan isbotlaysiz___________________________________________________
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14.O’tkazgichning o’tkir uchida nima sababdan elektr shamol hosil bo’ladi buni tushuntiring?_______
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